Climate and Average Weather Year Round in Andapa Madagascar

In Andapa, the summers are long, warm, oppressive, and overcast; the winters are comfortable and mostly clear; and it is wet year round. Over the course of the year, the temperature typically varies from 57°F to 84°F and is rarely below 55°F or above 87°F.

Based on the tourism score, the best times of year to visit Andapa for warm-weather activities are from late May to late June and from early August to early November.

The warm season lasts for 4.5 months, from November 26 to April 12, with an average daily high temperature above 82°F. The hottest month of the year in Andapa is February, with an average high of 83°F and low of 67°F.

The cool season lasts for 3.0 months, from June 13 to September 12, with an average daily high temperature below 75°F. The coldest month of the year in Andapa is July, with an average low of 57°F and high of 73°F.

In Andapa, 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 Andapa begins around April 15 and lasts for 7.2 months, ending around November 22.

The clearest month of the year in Andapa is September, during which on average the sky is clear, mostly clear, or partly cloudy 82% of the time.

The cloudier part of the year begins around November 22 and lasts for 4.8 months, ending around April 15.

The cloudiest month of the year in Andapa is February, during which on average the sky is overcast or mostly cloudy 84% 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 Andapa varies very significantly throughout the year.

The wetter season lasts 4.5 months, from November 30 to April 15, with a greater than 56% chance of a given day being a wet day. The month with the most wet days in Andapa is February, with an average of 23.7 days with at least 0.04 inches of precipitation.

The drier season lasts 7.5 months, from April 15 to November 30. The month with the fewest wet days in Andapa is October, with an average of 9.5 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 Andapa is February, with an average of 23.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 83% on February 21.

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. Andapa experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Andapa. The month with the most rain in Andapa is January, with an average rainfall of 12.3 inches.

The month with the least rain in Andapa is September, with an average rainfall of 2.7 inches.

The length of the day in Andapa varies over the course of the year. In 2024, the shortest day is June 20, with 11 hours, 16 minutes of daylight; the longest day is December 21, with 13 hours, 0 minutes of daylight.

The earliest sunrise is at 5:01 AM on November 22, and the latest sunrise is 1 hour, 6 minutes later at 6:07 AM on July 9. The earliest sunset is at 5:18 PM on June 1, and the latest sunset is 59 minutes later at 6:18 PM on January 22.

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

Andapa experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.9 months, from October 7 to June 4, during which time the comfort level is muggy, oppressive, or miserable at least 28% of the time. The month with the most muggy days in Andapa is January, with 29.9 days that are muggy or worse.

The month with the fewest muggy days in Andapa is August, with 1.8 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 Andapa experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from May 3 to November 7, with average wind speeds of more than 3.6 miles per hour. The windiest month of the year in Andapa is July, with an average hourly wind speed of 4.5 miles per hour.

The calmer time of year lasts for 5.9 months, from November 7 to May 3. The calmest month of the year in Andapa is February, with an average hourly wind speed of 2.7 miles per hour.

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

The wind is most often from the south for 4.2 months, from May 1 to September 6, with a peak percentage of 66% on June 24. The wind is most often from the east for 7.8 months, from September 6 to May 1, with a peak percentage of 56% on January 1.

Andapa 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 4.1 months, from December 19 to April 24, with an average temperature above 82°F. The month of the year in Andapa with the warmest water is February, with an average temperature of 84°F.

The time of year with cooler water lasts for 3.3 months, from July 1 to October 10, with an average temperature below 77°F. The month of the year in Andapa with the coolest water is August, with an average temperature of 75°F.

To characterize how pleasant the weather is in Andapa 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 Andapa for general outdoor tourist activities are from late May to late June and from early August to early November, with a peak score in the first week of October.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Andapa for hot-weather activities are from early April to mid May and from mid October to early December, with a peak score in the first week of November.

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 Andapa 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 2.3 months, from September 28 to December 6, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest month of the year in Andapa is November, with an average of 7.1 kWh.

The darker period of the year lasts for 2.6 months, from May 20 to August 8, with an average daily incident shortwave energy per square meter below 5.1 kWh. The darkest month of the year in Andapa is June, with an average of 4.6 kWh.

For the purposes of this report, the geographical coordinates of Andapa are -14.650 deg latitude, 49.650 deg longitude, and 1,585 ft elevation.

The topography within 2 miles of Andapa contains very significant variations in elevation, with a maximum elevation change of 1,926 feet and an average elevation above sea level of 1,815 feet. Within 10 miles contains very significant variations in elevation (4,780 feet). Within 50 miles also contains extreme variations in elevation (7,697 feet).

The area within 2 miles of Andapa is covered by trees (41%), cropland (24%), grassland (20%), and shrubs (14%), within 10 miles by trees (51%) and cropland (24%), and within 50 miles by trees (54%) and cropland (17%).