Climate and Average Weather Year Round in Sênmônoŭrôm Cambodia

In Sênmônoŭrôm, the wet season is warm, oppressive, and overcast and the dry season is hot and partly cloudy. Over the course of the year, the temperature typically varies from 61°F to 94°F and is rarely below 56°F or above 99°F.

Based on the tourism score, the best time of year to visit Sênmônoŭrôm for warm-weather activities is from mid November to mid March.

The hot season lasts for 2.2 months, from February 28 to May 3, with an average daily high temperature above 91°F. The hottest month of the year in Sênmônoŭrôm is April, with an average high of 93°F and low of 71°F.

The cool season lasts for 6.9 months, from June 10 to January 8, with an average daily high temperature below 84°F. The coldest month of the year in Sênmônoŭrôm is December, with an average low of 62°F and high of 83°F.

In Sênmônoŭrôm, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Sênmônoŭrôm begins around November 7 and lasts for 4.9 months, ending around April 4.

The clearest month of the year in Sênmônoŭrôm is February, during which on average the sky is clear, mostly clear, or partly cloudy 48% of the time.

The cloudier part of the year begins around April 4 and lasts for 7.1 months, ending around November 7.

The cloudiest month of the year in Sênmônoŭrôm is August, during which on average the sky is overcast or mostly cloudy 95% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Sênmônoŭrôm varies significantly throughout the year.

The wetter season lasts 6.2 months, from May 11 to November 17, with a greater than 24% chance of a given day being a wet day. The month with the most wet days in Sênmônoŭrôm is September, with an average of 12.7 days with at least 0.04 inches of precipitation.

The drier season lasts 5.8 months, from November 17 to May 11. The month with the fewest wet days in Sênmônoŭrôm is February, with an average of 0.5 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Sênmônoŭrôm is September, with an average of 12.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 47% on September 29.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Sênmônoŭrôm experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.6 months, from April 6 to December 27, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Sênmônoŭrôm is October, with an average rainfall of 4.2 inches.

The rainless period of the year lasts for 3.3 months, from December 27 to April 6. The month with the least rain in Sênmônoŭrôm is February, with an average rainfall of 0.1 inches.

The length of the day in Sênmônoŭrôm does not vary substantially over the course of the year, staying within 51 minutes of 12 hours throughout. In 2024, the shortest day is December 21, with 11 hours, 24 minutes of daylight; the longest day is June 21, with 12 hours, 52 minutes of daylight.

The earliest sunrise is at 5:24 AM on May 30, and the latest sunrise is 52 minutes later at 6:17 AM on January 26. The earliest sunset is at 5:22 PM on November 18, and the latest sunset is 59 minutes later at 6:21 PM on July 10.

Daylight saving time (DST) is not observed in Sênmônoŭrôm during 2024.

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Sênmônoŭrôm experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.5 months, from March 26 to December 12, during which time the comfort level is muggy, oppressive, or miserable at least 31% of the time. The month with the most muggy days in Sênmônoŭrôm is August, with 30.0 days that are muggy or worse.

The month with the fewest muggy days in Sênmônoŭrôm is February, with 2.7 days that are muggy or worse.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Sênmônoŭrôm experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.6 months, from November 10 to February 26, with average wind speeds of more than 6.6 miles per hour. The windiest month of the year in Sênmônoŭrôm is December, with an average hourly wind speed of 8.7 miles per hour.

The calmer time of year lasts for 8.5 months, from February 26 to November 10. The calmest month of the year in Sênmônoŭrôm is April, with an average hourly wind speed of 4.9 miles per hour.

The predominant average hourly wind direction in Sênmônoŭrôm varies throughout the year.

The wind is most often from the south for 3.3 months, from April 7 to July 16 and for 1.1 months, from August 31 to October 4, with a peak percentage of 58% on June 1. The wind is most often from the west for 1.5 months, from July 16 to August 31, with a peak percentage of 55% on August 7. The wind is most often from the east for 6.1 months, from October 4 to April 7, with a peak percentage of 85% on January 1.

To characterize how pleasant the weather is in Sênmônoŭrôm throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Sênmônoŭrôm for general outdoor tourist activities is from mid November to mid March, with a peak score in the second week of February.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Sênmônoŭrôm for hot-weather activities is from late February to late April, with a peak score in the last week of March.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Sênmônoŭrôm are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.3 months, from February 2 to April 10, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Sênmônoŭrôm is March, with an average of 6.4 kWh.

The darker period of the year lasts for 4.5 months, from May 25 to October 8, with an average daily incident shortwave energy per square meter below 4.6 kWh. The darkest month of the year in Sênmônoŭrôm is September, with an average of 4.2 kWh.

For the purposes of this report, the geographical coordinates of Sênmônoŭrôm are 12.456 deg latitude, 107.188 deg longitude, and 2,224 ft elevation.

The topography within 2 miles of Sênmônoŭrôm contains significant variations in elevation, with a maximum elevation change of 643 feet and an average elevation above sea level of 2,311 feet. Within 10 miles contains significant variations in elevation (2,005 feet). Within 50 miles contains large variations in elevation (4,990 feet).

The area within 2 miles of Sênmônoŭrôm is covered by grassland (56%) and cropland (26%), within 10 miles by trees (66%) and grassland (28%), and within 50 miles by trees (75%) and shrubs (12%).