Climate and Average Weather Year Round in Pyin Oo Lwin Myanmar (Burma)

In Pyin Oo Lwin, the summers are short, hot, and partly cloudy; the winters are short, cool, and mostly clear; and it is dry year round. Over the course of the year, the temperature typically varies from 47°F to 92°F and is rarely below 43°F or above 97°F.

Based on the tourism score, the best times of year to visit Pyin Oo Lwin for warm-weather activities are from late February to mid April and from late October to late November.

The hot season lasts for 2.2 months, from March 20 to May 26, with an average daily high temperature above 89°F. The hottest month of the year in Pyin Oo Lwin is May, with an average high of 90°F and low of 70°F.

The cool season lasts for 2.0 months, from December 3 to February 5, with an average daily high temperature below 80°F. The coldest month of the year in Pyin Oo Lwin is January, with an average low of 48°F and high of 78°F.

In Pyin Oo Lwin, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Pyin Oo Lwin begins around October 22 and lasts for 6.3 months, ending around May 1.

The clearest month of the year in Pyin Oo Lwin is February, during which on average the sky is clear, mostly clear, or partly cloudy 86% of the time.

The cloudier part of the year begins around May 1 and lasts for 5.7 months, ending around October 22.

The cloudiest month of the year in Pyin Oo Lwin is July, during which on average the sky is overcast or mostly cloudy 89% 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 Pyin Oo Lwin varies throughout the year.

The wetter season lasts 5.2 months, from May 9 to October 16, with a greater than 9% chance of a given day being a wet day. The month with the most wet days in Pyin Oo Lwin is June, with an average of 3.7 days with at least 0.04 inches of precipitation.

The drier season lasts 6.8 months, from October 16 to May 9. The month with the fewest wet days in Pyin Oo Lwin is February, with an average of 0.3 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 Pyin Oo Lwin is June, with an average of 3.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 17% on June 1.

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. Pyin Oo Lwin experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 5.0 months, from May 6 to October 6, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Pyin Oo Lwin is May, with an average rainfall of 0.7 inches.

The rainless period of the year lasts for 7.0 months, from October 6 to May 6. The month with the least rain in Pyin Oo Lwin is February, with an average rainfall of 0.0 inches.

The length of the day in Pyin Oo Lwin varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 47 minutes of daylight; the longest day is June 21, with 13 hours, 29 minutes of daylight.

The earliest sunrise is at 5:19 AM on June 6, and the latest sunrise is 1 hour, 26 minutes later at 6:45 AM on January 17. The earliest sunset is at 5:19 PM on November 27, and the latest sunset is 1 hour, 32 minutes later at 6:51 PM on July 4.

Daylight saving time (DST) is not observed in Pyin Oo Lwin 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.

Pyin Oo Lwin experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.4 months, from May 10 to October 22, during which time the comfort level is muggy, oppressive, or miserable at least 17% of the time. The month with the most muggy days in Pyin Oo Lwin is July, with 20.9 days that are muggy or worse.

The least muggy day of the year is February 7, when muggy conditions are essentially unheard of.

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 Pyin Oo Lwin experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.0 months, from May 23 to August 24, with average wind speeds of more than 6.5 miles per hour. The windiest month of the year in Pyin Oo Lwin is July, with an average hourly wind speed of 8.3 miles per hour.

The calmer time of year lasts for 9.0 months, from August 24 to May 23. The calmest month of the year in Pyin Oo Lwin is October, with an average hourly wind speed of 4.2 miles per hour.

The predominant average hourly wind direction in Pyin Oo Lwin varies throughout the year.

The wind is most often from the west for 2.1 months, from January 30 to April 2, with a peak percentage of 41% on March 31. The wind is most often from the south for 6.7 months, from April 2 to October 24, with a peak percentage of 90% on July 1. The wind is most often from the east for 3.2 months, from October 24 to January 30, with a peak percentage of 43% on January 1.

To characterize how pleasant the weather is in Pyin Oo Lwin 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 times of year to visit Pyin Oo Lwin for general outdoor tourist activities are from late February to mid April and from late October to late November, with a peak score in the second week of March.

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 Pyin Oo Lwin for hot-weather activities is from early April to mid May, with a peak score in the last week of April.

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 Pyin Oo Lwin 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 2.4 months, from February 25 to May 4, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Pyin Oo Lwin is April, with an average of 6.4 kWh.

The darker period of the year lasts for 4.1 months, from September 6 to January 9, with an average daily incident shortwave energy per square meter below 5.0 kWh. The darkest month of the year in Pyin Oo Lwin is November, with an average of 4.7 kWh.

For the purposes of this report, the geographical coordinates of Pyin Oo Lwin are 22.035 deg latitude, 96.457 deg longitude, and 3,570 ft elevation.

The topography within 2 miles of Pyin Oo Lwin contains significant variations in elevation, with a maximum elevation change of 515 feet and an average elevation above sea level of 3,536 feet. Within 10 miles contains significant variations in elevation (4,029 feet). Within 50 miles also contains extreme variations in elevation (5,994 feet).

The area within 2 miles of Pyin Oo Lwin is covered by cropland (68%) and trees (15%), within 10 miles by cropland (37%) and shrubs (33%), and within 50 miles by cropland (34%) and shrubs (29%).