Climate and Average Weather Year Round in Tam Kỳ Vietnam

In Tam Kỳ, the wet season is warm and overcast, the dry season is hot and mostly cloudy, and it is oppressive year round. Over the course of the year, the temperature typically varies from 67°F to 94°F and is rarely below 62°F or above 99°F.

Based on the tourism score, the best time of year to visit Tam Kỳ for warm-weather activities is from late December to late March.

The hot season lasts for 4.1 months, from May 1 to September 3, with an average daily high temperature above 91°F. The hottest month of the year in Tam Kỳ is June, with an average high of 94°F and low of 79°F.

The cool season lasts for 2.8 months, from November 24 to February 17, with an average daily high temperature below 80°F. The coldest month of the year in Tam Kỳ is January, with an average low of 67°F and high of 77°F.

In Tam Kỳ, 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 Tam Kỳ begins around October 29 and lasts for 5.8 months, ending around April 21.

The clearest month of the year in Tam Kỳ is February, during which on average the sky is clear, mostly clear, or partly cloudy 52% of the time.

The cloudier part of the year begins around April 21 and lasts for 6.2 months, ending around October 29.

The cloudiest month of the year in Tam Kỳ is June, during which on average the sky is overcast or mostly cloudy 96% 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 Tam Kỳ varies very significantly throughout the year.

The wetter season lasts 3.8 months, from August 17 to December 11, with a greater than 33% chance of a given day being a wet day. The month with the most wet days in Tam Kỳ is October, with an average of 18.7 days with at least 0.04 inches of precipitation.

The drier season lasts 8.2 months, from December 11 to August 17. The month with the fewest wet days in Tam Kỳ is February, with an average of 1.3 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 Tam Kỳ is October, with an average of 18.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 63% on October 13.

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. Tam Kỳ experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from March 20 to February 8, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Tam Kỳ is October, with an average rainfall of 17.1 inches.

The rainless period of the year lasts for 1.4 months, from February 8 to March 20. The month with the least rain in Tam Kỳ is February, with an average rainfall of 0.4 inches.

The length of the day in Tam Kỳ varies over the course of the year. In 2024, the shortest day is December 21, with 11 hours, 12 minutes of daylight; the longest day is June 21, with 13 hours, 3 minutes of daylight.

The earliest sunrise is at 5:14 AM on June 3, and the latest sunrise is 1 hour, 3 minutes later at 6:16 AM on January 23. The earliest sunset is at 5:12 PM on November 21, and the latest sunset is 1 hour, 9 minutes later at 6:21 PM on July 7.

Daylight saving time (DST) is not observed in Tam Kỳ 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.

Tam Kỳ experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 10 months, from February 11 to December 24, during which time the comfort level is muggy, oppressive, or miserable at least 64% of the time. The month with the most muggy days in Tam Kỳ is August, with 30.9 days that are muggy or worse.

The month with the fewest muggy days in Tam Kỳ is January, with 17.2 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 Tam Kỳ experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.5 months, from October 7 to February 21, with average wind speeds of more than 7.4 miles per hour. The windiest month of the year in Tam Kỳ is November, with an average hourly wind speed of 9.4 miles per hour.

The calmer time of year lasts for 7.6 months, from February 21 to October 7. The calmest month of the year in Tam Kỳ is July, with an average hourly wind speed of 5.2 miles per hour.

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

The wind is most often from the south for 3.6 months, from May 12 to August 30, with a peak percentage of 45% on June 8. The wind is most often from the east for 2.7 months, from August 30 to November 22 and for 4.5 months, from December 29 to May 12, with a peak percentage of 54% on October 30. The wind is most often from the north for 1.2 months, from November 22 to December 29, with a peak percentage of 54% on December 16.

Tam Kỳ 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 4.3 months, from May 28 to October 5, with an average temperature above 83°F. The month of the year in Tam Kỳ with the warmest water is August, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.4 months, from December 21 to April 1, with an average temperature below 76°F. The month of the year in Tam Kỳ with the coolest water is February, with an average temperature of 74°F.

To characterize how pleasant the weather is in Tam Kỳ 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 Tam Kỳ for general outdoor tourist activities is from late December to late 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 Tam Kỳ for hot-weather activities is from mid 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 Tam Kỳ 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 2.2 months, from February 24 to April 29, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Tam Kỳ is March, with an average of 6.0 kWh.

The darker period of the year lasts for 3.9 months, from May 26 to September 22, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year in Tam Kỳ is August, with an average of 3.9 kWh.

For the purposes of this report, the geographical coordinates of Tam Kỳ are 15.574 deg latitude, 108.474 deg longitude, and 36 ft elevation.

The topography within 2 miles of Tam Kỳ contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 30 feet. Within 10 miles contains only modest variations in elevation (1,476 feet). Within 50 miles contains very significant variations in elevation (8,524 feet).

The area within 2 miles of Tam Kỳ is covered by cropland (77%) and trees (12%), within 10 miles by cropland (35%) and water (31%), and within 50 miles by water (48%) and trees (26%).