2006; Tsujimoto et al. 3h). Umbrellas are generally useless during monsoon season, as the rains are often accompanied by powerful winds. Note that this definition is different from that for the normal gauge observation (h1:00:01 to h:00:00), and here we set the definition to match that of the satellite precipitation product, such as Global Satellite Mapping of Precipitation (GSMaP) (Earth Observation Research Center of Japan Aerospace Exploration Agency 2017). DST Changes. In addition, over region S, the rainfall amount is larger than in other regions in inland Cambodia and most frequent at night when the land breeze and the katabatic wind from the northeastward slope of the Cardamom Mountains converge with the AWM. Standard users can export data in a easy to use web interface or using an excel add-in. Thus, in a simple definition on a monthly basis, the summer monsoon season is from May to September, with the pre-monsoon season in March and April and the post-monsoon season in October and November. J Geophys Res Atmos 121:11,190111,200. The alteration from land breeze to lake breeze occurs at about 7:00 LT and from lake breeze to land breeze at around 17:0019:00 LT. During the daytime lake breeze hours, the specific humidity decreases. The 6-year-averaged rainfall at stations in inland Cambodia shows that the rainfall amount from May to September (summer monsoon season) is 877mm on average and varies from 519 to 1350mm. Hotels, particular in Sihanoukville, are often empty at this time of year, so this is when youll find good deals. It is coolest and sunniest at about 26C in the tourist-attractive high season in December. . Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama, 700-8530, Japan, Center for Research in Isotopes and Environmental Dynamics (CRiED), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan, International Centre for Water Hazard and Risk Management (ICHARM) of the Public Works Research Institute, 1-6 Minamihara, Tsukuba, Ibaraki, 305-8516, Japan, Department of Meteorology, Ministry of Water Resources and Meteorology, 364 Monivong Boulevard, Chamkarmorn, Phnom Penh, Cambodia, You can also search for this author in https://doi.org/10.1016/j.atmosres.2012.07.005, Takahashi HG (2016) Seasonal and diurnal variations in rainfall characteristics over the tropical Asian monsoon region using TRMM-PR data. We also aim to clarify the diurnal rainfall pattern and its regional characteristics for the pre-monsoon, summer monsoon, and post-monsoon seasons to highlight locally induced rainfall. The most effective protection against rain is one of the 2,000-riel ($0.50) colorful plastic ponchos that can be found for sale all over the country. The Andaman Islands belong officially to India, but are actually closer to Myanmar, Indonesia and Thailand. J Hydrosci Hydraul Eng 30:114, Tsujimoto K, Koike T (2013) Land-lake breezes at low latitudes: the case of Tonle Sap Lake in Cambodia. Based on his results, the onset date over the southern Indochina Peninsula (around Cambodia) is around 28 April to 8 May, and the withdrawal date is around 31 October to 10 November. The clear regional characteristics of the rainfall pattern within Cambodia imply that, even during the summer monsoon season, most of the rainfall in Cambodia is not simply determined by the strength of the ASM but is highly controlled by local features. 5 in each region and season are shown with vertical yellow shades. Show average precipitation in Kampot in Inches . Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Mr. Pich Veasna, H.E. China's government disputed the findings, saying there was low rainfall during last year's monsoon season on its portion of the 4,350-km (2,700-mile) river. Spending a night in the desert is a great adventurous bucket list experience. The comparison periods are from 1 January 2010 to 31 December 2015 (2191days) for S4 and from 1 January 2010 to 29 July 2012 (921days) for M3. https://doi.org/10.3390/cli3040792, Earth Observation Research Center (EORC), Japan Aerospace Exploration Agency (JAXA) (2017) Global Rainfall Map in Near Real Time (GSMaP_NRT) and Gauge-calibrated Rainfall Product (GSMaP_Gauge) data format description. Four white circles show the excluded stations for the analysis due to frequent missing data. Further numerical studies are required to examine the effect of the local circulation and the interaction with the synoptic-scale atmospheric condition. Rainfall Annual rainfall varies by region. We also thank Prof. Toshio Koike for valuable comments during the 7-year observation. Geography of Cambodia. It measures at a 0.5mm resolution with a receiving orifice diameter of 200mm. Since the lake is located northeast to the AWS, the observed winds at the AWS would be the landlake breezes resulting from the presence of the Tonle Sap Lake. J Meteor So Japan Ser II 78:461475. 2003; Xie et al. The best travel time is indicated by October to December. 5h, i). Home / Asia / South-eastern Asia / Cambodia / Siem reap / Averages. There is a way to experience Ubud in a fantastic less crowded way and this article will be your guide how to do that. J Clim 15:32063221. Clear regional characteristics in the diurnal precipitation patterns are recognized, and they suggest the significant effects of local features even during the ASM season. Same as Fig. In October and November it is still raining, but the temperatures start creeping down, with average highs of around 30 C (86 F) and lows around 23 C (73 F). Rainfall amounts from May to September (summer monsoon season, in blue), in March and April (pre-monsoon season, in orange), in October and November (post-monsoon season, in green), and in January, February, and December (dry season, in purple) are shown. The gauge-observed rainfall amount during the summer monsoon season (877mm on average in inland Cambodia) and its spatial distribution coincide with the results by Takahashi et al. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 86 F. April is usually the hottest month of the year, when temperatures start to climb to 40 C (104 F). For these calculations, we defined these three seasons not on a monthly basis but more exactly by defining the onset and withdrawal dates of the ASM for each year. These dates are shown in Table2 for each year from 2011 to 2015. J Meteor Soc Japan Ser II 94:269302. All rights reserved. Cambodia: 35: East Asia & Pacific | 10: 1,904: 2011: Venezuela: 36: Latin America & Caribbean | 16: 1,875: 2011: Ukraine: 37: Europe & Central Asia | 2: 1,875: 2011: Lao PDR: 38: . Holiday Weather - We provide weather averages for Siem reap, Cambodia. Based on the summary by Wallace (1975), apart from the abovementioned thermodynamic processes, dynamical processes may also explain the shift of rainfall maxima to other hours of the day, such as the convergence of flow within the planetary boundary layer. Data in data-missing years have been excluded, and the number of available rain gauges, N, and annual rainfall amount averaged over available inland rain gauges (except for station C1) are shown in each panel with a broken black line. It has a gauge resolution of 1.0mm with a receiving orifice diameter of 200mm. 2, along with each stations symbol. more information about the climate in Siem Reap (Angkor) in july As Tsujimoto and Koike (2013) demonstrated, a clear nighttime thermal contrast between the lake and the surrounding lands enhanced by the high lake surface temperature is also important for the strong nighttime land breeze circulation associated with the nocturnal rainfall over the southwestern plain. Cambodia is a tropical country, and as such, experiences dry and rainy seasons of approximately equal duration. Progress in Earth and Planetary Science You can add or remove cities to customize the report to your liking. https://doi.org/10.1002/jgrd.50547, Tsujimoto K, Masumoto T, Mitsuno T (2008) Seasonal changes in radiation and evaporation implied from the diurnal distribution of rainfall in the Lower Mekong. Theres a serious dearth of shade, the air is still, and the streets are dusty. The onset and withdrawal dates of the rainy season and their spatial distribution over and around the Indochina Peninsula were analyzed by Matsumoto (1997) using rain-gauge data in 19751987. The locations of the automatic rain gauges from which we gather rainfall data in Cambodia are shown in Table1 and Fig. Theres no harsh winter, and in fact no winter to speak of at all. Best Times to Travel Cambodia with sea breezes taking the edge off. Manage cookies/Do not sell my data we use in the preference centre. These stations are indicated by white circles in Fig. Cambodia is located in Southeast Asia, in the tropical zone, just 10-13 degrees north of the equator. Rainy season is a great time to travel around Cambodia, as the country is mercifully empty of tourists. II 93:548. While bookings in November and December remain strong, O'Leary said it was reasonable to expect single-digit percentage growth in average fares for the full-year . This nation-wide website presents information about the weather and climate for almost every country around the world. These previous studies showed that there exist synoptic-scale to intra-seasonal variations for rainfall phenomena over the Indochina Peninsula. 3a, b), the monthly mean wind is easterly over the South China Sea and southeasterly over the Gulf of Thailand. The whole of Cambodia is hit by the south western monsoon so the entire country is best avoided (along with most of South East Asia) during the . Bhatt BC, Nakamura K (2005) Characteristics of monsoon rainfall around the Himalayas revealed by TRMM precipitation radar. See all locations in Cambodia. Wind and specific humidity at 1000hPa over the Indochina Peninsula. As Takahashi et al. Clear landlake circulation, with a daytime lake breeze (onshore flow) and nighttime land breeze (offshore flow) in the presence of a linear convective system at its front, has been recognized in Cambodia by both the analysis of observations and numerical simulations (Tsujimoto and Koike 2008 Tsujimoto and Koike 2013). If youre not a fan of freezing, snowy winters, youre going to love Cambodia! The left panels (a, d, g) are for the pre-monsoon season, the middle panels (b, e, h) are for the summer monsoon season, and the right panels (c, f, i) are for the post-monsoon season. Climate and Average Weather Year Round in Cambodia. At locations where shrubs were growing, we asked local residents and/or landowners to keep them cut during the observation period. That said, cool season is also when Cambodia is at its most temperate, so for many its still the best time to visit the temples or do any sort of hiking or trekking. On average, February is the driest month with 25 mm (1 inch) of precipitation. Select a city to see its average temperature, precipitation and hours of sunshine over the year. The study of local effects on rainfall with consideration of the land-surface dynamics may aid flood and drought management in Cambodia. J Clim 25:392413. The highest station, M4, is located at a 237m altitude. November, December and January are the coolest months of the year in Cambodia. During the summer monsoon season, rainfall is larger in the northern region and smaller in the western region in inland Cambodia, in both amount and proportion to annual rainfall. Cambodia - Climate . In fact, even during the post-monsoon season, at the coastal station (C1) where the AWM converges with a daytime sea breeze and the anabatic wind to the southwestward slope of the Cardamom Mountains, the rainfall amount is large, with the peak occurring in the afternoon. DEFINITION: Average rainfall is the long-term average in depth (over space and time) of annual precipitation in the country. Most of the rainfall in inland Cambodia is observed to occur in the afternoon in both the pre-monsoon and the summer monsoon seasons, except for the dominant evening rainfall in the summer monsoon season in region N. The observed diurnal cycle of rainfall can be partly explained by the convergence of the large-scale and local-scale flows, as discussed by Houze et al. Sun & Moon. However, the characteristic midnight to early morning rainfall there is not obvious in 2015 when Cambodia is under high pressure. Our site offers climate and forecast data for almost all countries in the world. J Meteor Soc Japan. Hence, the spatio-temporal distribution of rainfall itself over Cambodia has yet to be clarified in detail. https://doi.org/10.1175/jcli3724.1, Takahashi HG, Yoshikane T, Hara M, Takata K, Yasunari T (2010b) High-resolution modelling of the potential impact of land surface conditions on regional climate over Indochina associated with the diurnal precipitation cycle. The average annual rainfall is 1400 mm in the central low land regions and may reach 4000 mm in certain coastal zones or in highland areas ( Fig. Partly sunny. Contents1 What are the seasons [] The rainfall intensity is not significantly larger in these regions than in other regions. The number of rain-gauge stations for the region N, S, M, and C is 7, 14, 6, and 1, respectively. Diurnal pattern of rainfall on rainfall frequency (ac), rainfall amount (df), and rainfall intensity (gi). 2010-2022 World Weather & Climate InformationAll rights reserved. (2012) showed that approximately 20% of the rainfall in the central Vietnam coastal area was brought by tropical cyclones, and Chen et al. The authors declare that they have no competing interests. https://doi.org/10.1002/joc.4147, National Committee for Disaster Management, United Nations Development Programme (2014) Cambodia disaster loss and damage analysis report 19962013. Are you going to Cambodia? (2007) showed the predominance of intra-seasonal variations in rainfall over the Indochina Peninsula during the summer monsoon season. In October (Fig. Because it has the best weather of the year, cool season is also when mobs of tourists descend on Cambodia. (2016) showed that the passage of the synoptic-scale eastward-moving trough produced the intermittent rainfall in Thailand during the pre-monsoon season. Following the removal of questionable data, we converted the recorded data to hourly and daily datasets. Detailed climate information - average monthly weather for all locations. Tsujimoto and Koike (2012) analyzed rain-gauge data in Cambodia together with global reanalysis data and found that about 3040% of post-monsoon rainfall was induced by the local circulation within Cambodia. The diurnal patterns over the mountain hillslopes (S9, S10) and at the station away from the mountain hillslopes (S14) are similar in Fig. 8) when the entire Cambodia is mostly covered by high pressure, with a few days having morning rainfall in regions N and M corresponding to low pressure. The 6-hourly data in each month are used to calculate the averages. The convergence with the anabatic wind as well as the orographic lifting of the moist lake air over the northeastern slopes of the Cardamom Mountains would also contribute to the afternoon rainfall in region M. On the coast in region C, the ASM converges with the nocturnal northeasterly land breeze and the katabatic wind from the southwestern slope of the Cardamom Mountains, and this would contribute to the late night to early morning rainfall there. The average precipitation during May is 150 mm (6 in); it rains on 17 days on average this month. (2010a) analyzed summer (MaySeptember) rainfall over the Indochina Peninsula using both satellite and ground observations and found the lowest rainfall over ridges and the leeward side of the high mountains of the Arakan, Dawna, and Annam Ranges and the highest rainfall offshore in the eastern Bay of Bengal, in the eastern Gulf of Thailand, and at the windward side of the Annam Range of the eastern Khorat Plateau. Cambodia is always warm (some say hot), with two distinct seasons, dry and monsoon (that is, rainy). (2012) showed that the heavy rainfall in Vietnam was basically by the westward-moving disturbances and not due to the northeasterly monsoon itself. The graph also includes 20th and 80th percentile values. 2). Climate 3:792811. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 83 F. The graph provides an alternative representation of the average data for your chosen location. Chance of rain: Siem reap. On this website you can find historical weather averages for many cities in Cambodia. The average amount of annual precipitation is: 2215 mm (87.2 inch). We then set the pre-monsoon season from 1 March to the previous day of the ASM onset, the summer monsoon season from the onset date to the withdrawal date, and the post-monsoon season from the next day of the withdrawal to 30 November. He found that the rainy season starts earlier in the inland region of Thailand from late April to early May and withdraws later in the central-eastern coast of Vietnam in late November. In july, maximum temperature is 90F and minimum temperature is 79F (for an average temperature of 85F). Annual rainfall observed at each rain gauge in inland Cambodia from 2010 to 2015. Meteorological data observed at the AWS at S7 (see Table1 and Fig. Cambodia is a country in mainland Southeast Asia, border Thailand, Laos, Vietnam, the Gulf of Thailand and covers a total area of 181,035 km 2 (69,898 sq mi). The relationship between soil moisture and precipitation in Bangladesh was recognized by satellite observation as well, with higher afternoon precipitation intensity over drier land surfaces over a flat terrain (Ono and Takahashi 2016). https://doi.org/10.1029/2006GL028129, Zhang Y, Li T, Wang B, Wu G (2002) Onset of the summer monsoon over the Indochina Peninsula: climatology and interannual variations.