Climate and Average Weather Year Round at Tanahmerah Airport Indonesia

At Tanahmerah Airport, the summers are short and hot; the winters are short and warm; and it is oppressive, wet, and overcast year round. Over the course of the year, the temperature typically varies from 74°F to 91°F and is rarely below 71°F or above 100°F.

Based on the beach/pool score, the best time of year to visit Tanahmerah Airport for hot-weather activities is from mid May to early October.

The hot season lasts for 2.5 months, from October 2 to December 17, with an average daily high temperature above 89°F. The hottest month of the year at Tanahmerah Airport is November, with an average high of 91°F and low of 77°F.

The cool season lasts for 2.3 months, from June 6 to August 15, with an average daily high temperature below 85°F. The coldest month of the year at Tanahmerah Airport is July, with an average low of 74°F and high of 83°F.

At Tanahmerah Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Tanahmerah Airport begins around May 7 and lasts for 5.2 months, ending around October 13.

The clearest month of the year at Tanahmerah Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 28% of the time.

The cloudier part of the year begins around October 13 and lasts for 6.8 months, ending around May 7.

The cloudiest month of the year at Tanahmerah Airport is December, during which on average the sky is overcast or mostly cloudy 88% 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 Tanahmerah Airport varies throughout the year.

The wetter season lasts 4.6 months, from December 9 to April 27, with a greater than 39% chance of a given day being a wet day. The month with the most wet days at Tanahmerah Airport is February, with an average of 14.6 days with at least 0.04 inches of precipitation.

The drier season lasts 7.5 months, from April 27 to December 9. The month with the fewest wet days at Tanahmerah Airport is July, with an average of 8.4 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 Tanahmerah Airport is February, with an average of 14.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 52% on February 16.

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. Tanahmerah Airport experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Tanahmerah Airport. The month with the most rain at Tanahmerah Airport is December, with an average rainfall of 11.7 inches.

The month with the least rain at Tanahmerah Airport is July, with an average rainfall of 5.1 inches.

The length of the day at Tanahmerah Airport does not vary substantially over the course of the year, staying within 28 minutes of 12 hours throughout. In 2024, the shortest day is June 21, with 11 hours, 46 minutes of daylight; the longest day is December 21, with 12 hours, 29 minutes of daylight.

The earliest sunrise is at 5:11 AM on November 13, and the latest sunrise is 39 minutes later at 5:50 AM on July 17. The earliest sunset is at 5:29 PM on May 23, and the latest sunset is 33 minutes later at 6:03 PM on February 1.

Daylight saving time (DST) is not observed at Tanahmerah Airport 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 at Tanahmerah Airport, 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, staying within 3% of 97% 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 at Tanahmerah Airport does not vary significantly over the course of the year, remaining within 0.2 miles per hour of 1.6 miles per hour throughout.

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

The wind is most often from the south for 5.3 months, from April 5 to September 14, with a peak percentage of 58% on July 3. The wind is most often from the east for 1.5 months, from September 14 to October 30, with a peak percentage of 42% on September 21. The wind is most often from the west for 5.2 months, from October 30 to April 5, with a peak percentage of 59% on January 1.

To characterize how pleasant the weather is at Tanahmerah Airport 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 Tanahmerah Airport for general outdoor tourist activities is from mid June to early September, with a peak score in the last week of July.

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 Tanahmerah Airport for hot-weather activities is from mid May to early October, with a peak score in the second week of August.

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 Tanahmerah Airport 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.

For the purposes of this report, the geographical coordinates of Tanahmerah Airport are -6.097 deg latitude, 140.303 deg longitude, and 79 ft elevation.

The topography within 2 miles of Tanahmerah Airport contains only modest variations in elevation, with a maximum elevation change of 128 feet and an average elevation above sea level of 81 feet. Within 10 miles also contains only modest variations in elevation (240 feet). Within 50 miles contains only modest variations in elevation (1,388 feet).

The area within 2 miles of Tanahmerah Airport is covered by trees (41%), cropland (33%), and grassland (10%), within 10 miles by trees (74%) and cropland (16%), and within 50 miles by trees (81%) and cropland (13%).