Climate and Average Weather Year Round in Upanema Brazil

In Upanema, the summers are sweltering, humid, arid, and windy; the winters are long, warm, oppressive, and wet; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 69°F to 101°F and is rarely below 67°F or above 103°F.

Based on the beach/pool score, the best time of year to visit Upanema for hot-weather activities is from mid June to mid September.

The hot season lasts for 3.4 months, from September 12 to December 25, with an average daily high temperature above 99°F. The hottest month of the year in Upanema is November, with an average high of 101°F and low of 74°F.

The cool season lasts for 3.8 months, from March 17 to July 11, with an average daily high temperature below 93°F. The coldest month of the year in Upanema is June, with an average low of 71°F and high of 92°F.

In Upanema, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Upanema begins around May 29 and lasts for 4.8 months, ending around October 23.

The clearest month of the year in Upanema is July, during which on average the sky is clear, mostly clear, or partly cloudy 75% of the time.

The cloudier part of the year begins around October 23 and lasts for 7.2 months, ending around May 29.

The cloudiest month of the year in Upanema is April, during which on average the sky is overcast or mostly cloudy 67% 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 Upanema varies very significantly throughout the year.

The wetter season lasts 4.0 months, from January 27 to May 25, with a greater than 30% chance of a given day being a wet day. The month with the most wet days in Upanema is March, with an average of 16.7 days with at least 0.04 inches of precipitation.

The drier season lasts 8.0 months, from May 25 to January 27. The month with the fewest wet days in Upanema is October, with an average of 0.4 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 in Upanema is March, with an average of 16.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 58% on March 24.

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. Upanema experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.1 months, from December 17 to July 20, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Upanema is April, with an average rainfall of 5.1 inches.

The rainless period of the year lasts for 4.9 months, from July 20 to December 17. The month with the least rain in Upanema is October, with an average rainfall of 0.1 inches.

The length of the day in Upanema does not vary substantially over the course of the year, staying within 27 minutes of 12 hours throughout. In 2024, the shortest day is June 20, with 11 hours, 48 minutes of daylight; the longest day is December 21, with 12 hours, 27 minutes of daylight.

The earliest sunrise is at 5:02 AM on November 12, and the latest sunrise is 38 minutes later at 5:40 AM on July 18. The earliest sunset is at 5:20 PM on May 23, and the latest sunset is 32 minutes later at 5:53 PM on February 1.

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

Upanema experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.4 months, from November 10 to July 23, during which time the comfort level is muggy, oppressive, or miserable at least 46% of the time. The month with the most muggy days in Upanema is March, with 28.7 days that are muggy or worse.

The month with the fewest muggy days in Upanema is September, with 9.1 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 Upanema experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.3 months, from July 7 to January 18, with average wind speeds of more than 11.1 miles per hour. The windiest month of the year in Upanema is October, with an average hourly wind speed of 14.4 miles per hour.

The calmer time of year lasts for 5.7 months, from January 18 to July 7. The calmest month of the year in Upanema is April, with an average hourly wind speed of 7.8 miles per hour.

The predominant average hourly wind direction in Upanema is from the east throughout the year.

Upanema 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 3.6 months, from January 31 to May 19, with an average temperature above 83°F. The month of the year in Upanema with the warmest water is April, with an average temperature of 84°F.

The time of year with cooler water lasts for 3.0 months, from July 12 to October 12, with an average temperature below 80°F. The month of the year in Upanema with the coolest water is August, with an average temperature of 79°F.

To characterize how pleasant the weather is in Upanema 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 Upanema for general outdoor tourist activities is from mid June to early September, with a peak score in the third 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 Upanema for hot-weather activities is from mid June to mid September, with a peak score in the third week of July.

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 Upanema 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 2.9 months, from September 6 to December 3, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in Upanema is October, with an average of 7.6 kWh.

The darker period of the year lasts for 3.9 months, from March 22 to July 18, with an average daily incident shortwave energy per square meter below 6.1 kWh. The darkest month of the year in Upanema is May, with an average of 5.8 kWh.

For the purposes of this report, the geographical coordinates of Upanema are -5.642 deg latitude, -37.258 deg longitude, and 151 ft elevation.

The topography within 2 miles of Upanema contains only modest variations in elevation, with a maximum elevation change of 184 feet and an average elevation above sea level of 171 feet. Within 10 miles contains only modest variations in elevation (558 feet). Within 50 miles contains significant variations in elevation (2,474 feet).

The area within 2 miles of Upanema is covered by cropland (34%), grassland (26%), trees (22%), and shrubs (18%), within 10 miles by grassland (33%) and trees (30%), and within 50 miles by shrubs (29%) and trees (29%).