Climate and Average Weather Year Round in Gadong China

In Gadong, the summers are long, comfortable, and mostly cloudy and the winters are freezing, dry, and mostly clear. Over the course of the year, the temperature typically varies from 14°F to 72°F and is rarely below 9°F or above 77°F.

Based on the tourism score, the best time of year to visit Gadong for warm-weather activities is from late May to early July.

The warm season lasts for 3.9 months, from May 19 to September 16, with an average daily high temperature above 66°F. The hottest month of the year in Gadong is July, with an average high of 71°F and low of 48°F.

The cold season lasts for 3.1 months, from November 30 to March 1, with an average daily high temperature below 47°F. The coldest month of the year in Gadong is January, with an average low of 14°F and high of 41°F.

In Gadong, 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 Gadong begins around September 16 and lasts for 9.2 months, ending around June 22.

The clearest month of the year in Gadong is November, during which on average the sky is clear, mostly clear, or partly cloudy 89% of the time.

The cloudier part of the year begins around June 22 and lasts for 2.8 months, ending around September 16.

The cloudiest month of the year in Gadong is August, during which on average the sky is overcast or mostly cloudy 71% 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 Gadong varies significantly throughout the year.

The wetter season lasts 2.7 months, from June 17 to September 8, with a greater than 23% chance of a given day being a wet day. The month with the most wet days in Gadong is July, with an average of 12.8 days with at least 0.04 inches of precipitation.

The drier season lasts 9.3 months, from September 8 to June 17. The month with the fewest wet days in Gadong is January, with an average of 0.0 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 Gadong is July, with an average of 12.8 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 45% on August 6.

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. Gadong experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 4.4 months, from May 13 to September 25, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Gadong is July, with an average rainfall of 3.3 inches.

The rainless period of the year lasts for 7.6 months, from September 25 to May 13. The month with the least rain in Gadong is December, with an average rainfall of -0.0 inches.

The length of the day in Gadong varies significantly over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 17 minutes of daylight; the longest day is June 21, with 14 hours, 1 minute of daylight.

The earliest sunrise is at 5:03 AM on June 11, and the latest sunrise is 1 hour, 55 minutes later at 6:58 AM on January 11. The earliest sunset is at 5:04 PM on December 1, and the latest sunset is 2 hours, 2 minutes later at 7:06 PM on July 1.

Daylight saving time (DST) is not observed in Gadong 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.

The perceived humidity level in Gadong, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

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 Gadong experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.4 months, from December 21 to May 2, with average wind speeds of more than 7.8 miles per hour. The windiest month of the year in Gadong is February, with an average hourly wind speed of 10.0 miles per hour.

The calmer time of year lasts for 7.6 months, from May 2 to December 21. The calmest month of the year in Gadong is August, with an average hourly wind speed of 5.2 miles per hour.

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

The wind is most often from the south for 6.0 months, from May 7 to November 6, with a peak percentage of 77% on August 26. The wind is most often from the west for 6.0 months, from November 6 to May 7, with a peak percentage of 67% on January 1.

To characterize how pleasant the weather is in Gadong 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 Gadong for general outdoor tourist activities is from late May to early July, with a peak score in the third week of June.

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 Gadong for hot-weather activities is for the entire month of June, with a peak score in the third week of June.

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).

The growing season in Gadong typically lasts for 5.2 months (160 days), from around May 4 to around October 12, rarely starting before April 18 or after May 21, and rarely ending before September 27 or after October 26.

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.

Based on growing degree days alone, the first spring blooms in Gadong should appear around May 6, only rarely appearing before April 24 or after May 16.

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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 2.4 months, from April 15 to June 26, with an average daily incident shortwave energy per square meter above 7.8 kWh. The brightest month of the year in Gadong is May, with an average of 8.4 kWh.

The darker period of the year lasts for 2.8 months, from November 10 to February 2, with an average daily incident shortwave energy per square meter below 5.4 kWh. The darkest month of the year in Gadong is December, with an average of 4.6 kWh.

For the purposes of this report, the geographical coordinates of Gadong are 29.213 deg latitude, 89.178 deg longitude, and 12,720 ft elevation.

The topography within 2 miles of Gadong contains only modest variations in elevation, with a maximum elevation change of 417 feet and an average elevation above sea level of 12,762 feet. Within 10 miles contains only modest variations in elevation (5,489 feet). Within 50 miles also contains extreme variations in elevation (7,740 feet).

The area within 2 miles of Gadong is covered by grassland (72%) and cropland (13%), within 10 miles by grassland (88%), and within 50 miles by grassland (92%).