Climate and Average Weather Year Round at Dongshi Taiwan

At Dongshi, the wet season is hot, oppressive, and overcast and the dry season is comfortable, humid, windy, and mostly clear. Over the course of the year, the temperature typically varies from 60°F to 89°F and is rarely below 53°F or above 92°F.

Based on the beach/pool score, the best time of year to visit Dongshi for hot-weather activities is from late September to mid November.

The hot season lasts for 4.1 months, from May 30 to October 1, with an average daily high temperature above 85°F. The hottest month of the year at Dongshi is July, with an average high of 89°F and low of 80°F.

The cool season lasts for 2.9 months, from December 12 to March 7, with an average daily high temperature below 72°F. The coldest month of the year at Dongshi is January, with an average low of 60°F and high of 69°F.

At Dongshi, 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 at Dongshi begins around September 25 and lasts for 7.0 months, ending around April 23.

The clearest month of the year at Dongshi is December, during which on average the sky is clear, mostly clear, or partly cloudy 72% of the time.

The cloudier part of the year begins around April 23 and lasts for 5.0 months, ending around September 25.

The cloudiest month of the year at Dongshi is June, during which on average the sky is overcast or mostly cloudy 81% 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 at Dongshi varies significantly throughout the year.

The wetter season lasts 4.8 months, from April 25 to September 18, with a greater than 31% chance of a given day being a wet day. The month with the most wet days at Dongshi is August, with an average of 15.4 days with at least 0.04 inches of precipitation.

The drier season lasts 7.2 months, from September 18 to April 25. The month with the fewest wet days at Dongshi is December, with an average of 2.8 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 at Dongshi is August, with an average of 15.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 54% on June 10.

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. Dongshi experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Dongshi. The month with the most rain at Dongshi is August, with an average rainfall of 9.4 inches.

The month with the least rain at Dongshi is December, with an average rainfall of 1.0 inches.

The length of the day at Dongshi varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 42 minutes of daylight; the longest day is June 21, with 13 hours, 34 minutes of daylight.

The earliest sunrise is at 5:14 AM on June 7, and the latest sunrise is 1 hour, 30 minutes later at 6:44 AM on January 15. The earliest sunset is at 5:14 PM on November 28, and the latest sunset is 1 hour, 37 minutes later at 6:51 PM on July 3.

Daylight saving time (DST) is not observed at Dongshi 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.

Dongshi experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.1 months, from March 5 to December 8, during which time the comfort level is muggy, oppressive, or miserable at least 29% of the time.

The month with the fewest muggy days at Dongshi is January, with 2.1 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 at Dongshi experiences extreme seasonal variation over the course of the year.

The windier part of the year lasts for 5.2 months, from October 3 to March 10, with average wind speeds of more than 13.2 miles per hour. The windiest month of the year at Dongshi is December, with an average hourly wind speed of 17.3 miles per hour.

The calmer time of year lasts for 6.8 months, from March 10 to October 3. The calmest month of the year at Dongshi is May, with an average hourly wind speed of 9.2 miles per hour.

The predominant average hourly wind direction at Dongshi varies throughout the year.

The wind is most often from the south for 3.1 months, from May 26 to August 29, with a peak percentage of 70% on June 28. The wind is most often from the north for 8.9 months, from August 29 to May 26, with a peak percentage of 97% on January 1.

Dongshi is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 4.0 months, from June 4 to October 4, with an average temperature above 80°F. The month of the year at Dongshi with the warmest water is July, with an average temperature of 83°F.

The time of year with cooler water lasts for 3.0 months, from December 18 to March 18, with an average temperature below 72°F. The month of the year at Dongshi with the coolest water is February, with an average temperature of 70°F.

To characterize how pleasant the weather is at Dongshi 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 Dongshi for general outdoor tourist activities are from late February to late March and from mid October to mid January, with a peak score in the last week of November.

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 Dongshi for hot-weather activities is from late September to mid November, with a peak score in the third week of October.

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 at Dongshi 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 2.1 months, from March 25 to May 29, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest month of the year at Dongshi is April, with an average of 5.7 kWh.

The darker period of the year lasts for 2.2 months, from November 21 to January 29, with an average daily incident shortwave energy per square meter below 4.2 kWh. The darkest month of the year at Dongshi is December, with an average of 3.9 kWh.

For the purposes of this report, the geographical coordinates of Dongshi are 23.267 deg latitude, 119.667 deg longitude, and 0 ft elevation.

The topography within 2 miles of Dongshi contains only modest variations in elevation, with a maximum elevation change of 151 feet and an average elevation above sea level of 5 feet. Within 10 miles also contains only modest variations in elevation (187 feet). Within 50 miles contains only modest variations in elevation (1,158 feet).

The area within 2 miles of Dongshi is covered by water (100%), within 10 miles by water (100%), and within 50 miles by water (94%).