Climate and Average Weather Year Round in Alegre Brazil

In Alegre, the wet season is hot, oppressive, and mostly cloudy and the dry season is warm and mostly clear. Over the course of the year, the temperature typically varies from 59°F to 90°F and is rarely below 53°F or above 95°F.

Based on the tourism score, the best time of year to visit Alegre for warm-weather activities is from early May to mid September.

The hot season lasts for 2.5 months, from January 2 to March 17, with an average daily high temperature above 88°F. The hottest month of the year in Alegre is February, with an average high of 90°F and low of 70°F.

The cool season lasts for 3.2 months, from May 8 to August 14, with an average daily high temperature below 83°F. The coldest month of the year in Alegre is July, with an average low of 59°F and high of 81°F.

In Alegre, 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 Alegre begins around April 4 and lasts for 6.3 months, ending around October 13.

The clearest month of the year in Alegre is August, during which on average the sky is clear, mostly clear, or partly cloudy 76% of the time.

The cloudier part of the year begins around October 13 and lasts for 5.7 months, ending around April 4.

The cloudiest month of the year in Alegre is December, during which on average the sky is overcast or mostly cloudy 76% 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 Alegre varies very significantly throughout the year.

The wetter season lasts 5.4 months, from October 20 to April 3, with a greater than 36% chance of a given day being a wet day. The month with the most wet days in Alegre is December, with an average of 19.6 days with at least 0.04 inches of precipitation.

The drier season lasts 6.5 months, from April 3 to October 20. The month with the fewest wet days in Alegre is July, with an average of 2.1 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 Alegre is December, with an average of 19.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 66% on December 19.

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. Alegre experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from August 5 to June 20, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Alegre is December, with an average rainfall of 8.3 inches.

The rainless period of the year lasts for 1.5 months, from June 20 to August 5. The month with the least rain in Alegre is July, with an average rainfall of 0.4 inches.

The length of the day in Alegre varies over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 52 minutes of daylight; the longest day is December 21, with 13 hours, 24 minutes of daylight.

The earliest sunrise is at 4:56 AM on November 27, and the latest sunrise is 1 hour, 27 minutes later at 6:23 AM on July 5. The earliest sunset is at 5:12 PM on June 5, and the latest sunset is 1 hour, 21 minutes later at 6:33 PM on January 16.

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

Alegre experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.3 months, from September 24 to June 2, during which time the comfort level is muggy, oppressive, or miserable at least 31% of the time. The month with the most muggy days in Alegre is March, with 29.1 days that are muggy or worse.

The month with the fewest muggy days in Alegre is July, with 3.4 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 Alegre experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.3 months, from August 1 to January 12, with average wind speeds of more than 7.2 miles per hour. The windiest month of the year in Alegre is September, with an average hourly wind speed of 8.4 miles per hour.

The calmer time of year lasts for 6.7 months, from January 12 to August 1. The calmest month of the year in Alegre is April, with an average hourly wind speed of 6.0 miles per hour.

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

The wind is most often from the east for 2.3 months, from March 15 to May 25; for 1.0 weeks, from August 22 to August 29; and for 1.5 months, from September 13 to October 29, with a peak percentage of 41% on October 15. The wind is most often from the north for 2.9 months, from May 25 to August 22; for 2.1 weeks, from August 29 to September 13; and for 4.5 months, from October 29 to March 15, with a peak percentage of 42% on July 5.

Alegre 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 2.6 months, from February 14 to May 1, with an average temperature above 77°F. The month of the year in Alegre with the warmest water is March, with an average temperature of 78°F.

The time of year with cooler water lasts for 3.5 months, from July 2 to October 18, with an average temperature below 73°F. The month of the year in Alegre with the coolest water is August, with an average temperature of 72°F.

To characterize how pleasant the weather is in Alegre 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 Alegre for general outdoor tourist activities is from early May to mid 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 times of year to visit Alegre for hot-weather activities are from late March to early June and from late July to mid October, with a peak score in the last week of April.

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 Alegre 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 2.0 months, from December 29 to February 29, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest month of the year in Alegre is February, with an average of 6.5 kWh.

The darker period of the year lasts for 2.5 months, from May 9 to July 26, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest month of the year in Alegre is June, with an average of 4.2 kWh.

For the purposes of this report, the geographical coordinates of Alegre are -20.764 deg latitude, -41.533 deg longitude, and 814 ft elevation.

The topography within 2 miles of Alegre contains very significant variations in elevation, with a maximum elevation change of 1,558 feet and an average elevation above sea level of 1,024 feet. Within 10 miles contains very significant variations in elevation (3,743 feet). Within 50 miles also contains extreme variations in elevation (9,403 feet).

The area within 2 miles of Alegre is covered by cropland (54%) and trees (33%), within 10 miles by cropland (48%) and trees (41%), and within 50 miles by trees (43%) and cropland (38%).