Climate and Average Weather Year Round in Longnawang Indonesia

The climate in Longnawang is warm, oppressive, and overcast. Over the course of the year, the temperature typically varies from 68°F to 80°F and is rarely below 66°F or above 83°F.

Based on the tourism score, the best times of year to visit Longnawang for warm-weather activities are from late February to mid March and from mid May to mid September.

The temperature in Longnawang varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

The clearest month of the year in Longnawang is June, during which on average the sky is clear, mostly clear, or partly cloudy 14% of the time.

The cloudiest month of the year in Longnawang is November, during which on average the sky is overcast or mostly cloudy 93% 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 Longnawang varies throughout the year.

The wetter season lasts 7.2 months, from October 2 to May 9, with a greater than 54% chance of a given day being a wet day. The month with the most wet days in Longnawang is December, with an average of 20.9 days with at least 0.04 inches of precipitation.

The drier season lasts 4.8 months, from May 9 to October 2. The month with the fewest wet days in Longnawang is July, with an average of 12.7 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 Longnawang is December, with an average of 20.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 69% on December 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. Longnawang experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Longnawang. The month with the most rain in Longnawang is December, with an average rainfall of 11.5 inches.

The month with the least rain in Longnawang is July, with an average rainfall of 6.1 inches.

The length of the day in Longnawang does not vary substantially over the course of the year, staying within 13 minutes of 12 hours throughout. In 2024, the shortest day is December 21, with 12 hours, 1 minute of daylight; the longest day is June 21, with 12 hours, 14 minutes of daylight.

The earliest sunrise is at 6:02 AM on November 1, and the latest sunrise is 31 minutes later at 6:32 AM on February 10. The earliest sunset is at 6:05 PM on November 5, and the latest sunset is 31 minutes later at 6:36 PM on February 14.

Daylight saving time (DST) is not observed in Longnawang 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 Longnawang, 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 2% of 98% 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 Longnawang does not vary significantly over the course of the year, remaining within 0.1 miles per hour of 1.3 miles per hour throughout.

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

The wind is most often from the east for 3.7 months, from January 1 to April 23, with a peak percentage of 41% on March 15. The wind is most often from the west for 1.1 months, from April 23 to May 26; for 2.6 weeks, from June 10 to June 28; and for 3.4 months, from September 19 to December 31, with a peak percentage of 55% on November 27. The wind is most often from the south for 2.1 weeks, from May 26 to June 10 and for 2.7 months, from June 28 to September 19, with a peak percentage of 46% on August 9.

To characterize how pleasant the weather is in Longnawang 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 Longnawang for general outdoor tourist activities are from late February to mid March and from mid May to mid September, with a peak score in the last 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 Longnawang for hot-weather activities is from late February to mid September, 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).

Temperatures in Longnawang 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 Longnawang are 1.789 deg latitude, 114.901 deg longitude, and 1,949 ft elevation.

The topography within 2 miles of Longnawang contains significant variations in elevation, with a maximum elevation change of 817 feet and an average elevation above sea level of 2,130 feet. Within 10 miles contains significant variations in elevation (3,169 feet). Within 50 miles contains large variations in elevation (6,831 feet).

The area within 2 miles of Longnawang is covered by trees (83%) and cropland (11%), within 10 miles by trees (91%), and within 50 miles by trees (92%).