Climate and Average Weather Year Round in Júlio de Castilhos Brazil

In Júlio de Castilhos, the summers are long, warm, and muggy; the winters are short and cool; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 46°F to 84°F and is rarely below 34°F or above 91°F.

Based on the tourism score, the best times of year to visit Júlio de Castilhos for warm-weather activities are from late January to late April and from mid October to mid January.

The warm season lasts for 4.3 months, from November 12 to March 22, with an average daily high temperature above 79°F. The hottest month of the year in Júlio de Castilhos is January, with an average high of 83°F and low of 65°F.

The cool season lasts for 2.9 months, from May 19 to August 15, with an average daily high temperature below 67°F. The coldest month of the year in Júlio de Castilhos is July, with an average low of 47°F and high of 63°F.

In Júlio de Castilhos, 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 in Júlio de Castilhos begins around September 28 and lasts for 7.5 months, ending around May 13.

The clearest month of the year in Júlio de Castilhos is March, during which on average the sky is clear, mostly clear, or partly cloudy 65% of the time.

The cloudier part of the year begins around May 13 and lasts for 4.5 months, ending around September 28.

The cloudiest month of the year in Júlio de Castilhos is June, during which on average the sky is overcast or mostly cloudy 50% 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 Júlio de Castilhos varies throughout the year.

The wetter season lasts 9.1 months, from September 18 to June 23, with a greater than 37% chance of a given day being a wet day. The month with the most wet days in Júlio de Castilhos is February, with an average of 12.6 days with at least 0.04 inches of precipitation.

The drier season lasts 2.9 months, from June 23 to September 18. The month with the fewest wet days in Júlio de Castilhos is May, with an average of 9.1 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 Júlio de Castilhos is February, with an average of 12.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 46% on February 9.

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. Júlio de Castilhos experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Júlio de Castilhos. The month with the most rain in Júlio de Castilhos is October, with an average rainfall of 7.2 inches.

The month with the least rain in Júlio de Castilhos is August, with an average rainfall of 4.5 inches.

The length of the day in Júlio de Castilhos varies significantly over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 16 minutes of daylight; the longest day is December 21, with 14 hours, 1 minute of daylight.

The earliest sunrise is at 5:27 AM on December 2, and the latest sunrise is 2 hours, 2 minutes later at 7:29 AM on July 1. The earliest sunset is at 5:43 PM on June 9, and the latest sunset is 1 hour, 55 minutes later at 7:38 PM on January 10.

Daylight saving time (DST) is not observed in Júlio de Castilhos 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.

Júlio de Castilhos experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.6 months, from October 14 to May 1, during which time the comfort level is muggy, oppressive, or miserable at least 19% of the time. The month with the most muggy days in Júlio de Castilhos is January, with 20.1 days that are muggy or worse.

The month with the fewest muggy days in Júlio de Castilhos is July, with 1.0 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 Júlio de Castilhos experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.6 months, from May 26 to December 13, with average wind speeds of more than 4.4 miles per hour. The windiest month of the year in Júlio de Castilhos is September, with an average hourly wind speed of 4.9 miles per hour.

The calmer time of year lasts for 5.4 months, from December 13 to May 26. The calmest month of the year in Júlio de Castilhos is February, with an average hourly wind speed of 3.9 miles per hour.

The predominant average hourly wind direction in Júlio de Castilhos varies throughout the year.

The wind is most often from the north for 3.6 months, from May 11 to August 29, with a peak percentage of 43% on June 20. The wind is most often from the east for 8.4 months, from August 29 to May 11, with a peak percentage of 46% on January 1.

To characterize how pleasant the weather is in Júlio de Castilhos 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 Júlio de Castilhos for general outdoor tourist activities are from late January to late April and from mid October to mid January, with a peak score in the third week of March.

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 Júlio de Castilhos for hot-weather activities is from late November to mid March, with a peak score in the second week of January.

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).

The growing season in Júlio de Castilhos typically lasts for 11 months (337 days), from around July 19 to around June 21, rarely starting after August 18, or ending before May 22.

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.

Based on growing degree days alone, the first spring blooms in Júlio de Castilhos should appear around July 15, only rarely appearing before July 10 or after July 24.

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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.3 months, from October 29 to February 9, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest month of the year in Júlio de Castilhos is December, with an average of 7.4 kWh.

The darker period of the year lasts for 3.1 months, from May 6 to August 10, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest month of the year in Júlio de Castilhos is June, with an average of 3.0 kWh.

For the purposes of this report, the geographical coordinates of Júlio de Castilhos are -29.227 deg latitude, -53.682 deg longitude, and 1,699 ft elevation.

The topography within 2 miles of Júlio de Castilhos contains only modest variations in elevation, with a maximum elevation change of 331 feet and an average elevation above sea level of 1,595 feet. Within 10 miles contains only modest variations in elevation (620 feet). Within 50 miles contains significant variations in elevation (2,096 feet).

The area within 2 miles of Júlio de Castilhos is covered by cropland (40%), trees (24%), grassland (19%), and shrubs (18%), within 10 miles by cropland (57%) and trees (23%), and within 50 miles by cropland (44%) and trees (29%).