Climate and Average Weather Year Round in Rocha Uruguay

In Rocha, the summers are warm and humid, the winters are cold, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 43°F to 84°F and is rarely below 33°F or above 94°F.

Based on the tourism score, the best time of year to visit Rocha for warm-weather activities is from late October to mid April.

The warm season lasts for 3.3 months, from December 4 to March 14, with an average daily high temperature above 79°F. The hottest month of the year in Rocha is January, with an average high of 84°F and low of 63°F.

The cool season lasts for 3.4 months, from May 24 to September 5, with an average daily high temperature below 64°F. The coldest month of the year in Rocha is July, with an average low of 43°F and high of 59°F.

In Rocha, 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 Rocha begins around October 4 and lasts for 6.3 months, ending around April 14.

The clearest month of the year in Rocha is January, during which on average the sky is clear, mostly clear, or partly cloudy 68% of the time.

The cloudier part of the year begins around April 14 and lasts for 5.7 months, ending around October 4.

The cloudiest month of the year in Rocha is June, during which on average the sky is overcast or mostly cloudy 53% 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 Rocha varies throughout the year.

The wetter season lasts 5.3 months, from November 9 to April 18, with a greater than 26% chance of a given day being a wet day. The month with the most wet days in Rocha is February, with an average of 8.6 days with at least 0.04 inches of precipitation.

The drier season lasts 6.7 months, from April 18 to November 9. The month with the fewest wet days in Rocha is July, with an average of 7.0 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 Rocha is February, with an average of 8.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on February 15.

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. Rocha experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Rocha. The month with the most rain in Rocha is April, with an average rainfall of 4.5 inches.

The month with the least rain in Rocha is December, with an average rainfall of 3.0 inches.

The length of the day in Rocha varies significantly over the course of the year. In 2024, the shortest day is June 20, with 9 hours, 51 minutes of daylight; the longest day is December 21, with 14 hours, 28 minutes of daylight.

The earliest sunrise is at 5:17 AM on December 5, and the latest sunrise is 2 hours, 27 minutes later at 7:44 AM on June 29. The earliest sunset is at 5:33 PM on June 11, and the latest sunset is 2 hours, 20 minutes later at 7:53 PM on January 7.

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

Rocha experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.8 months, from November 25 to April 18, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The month with the most muggy days in Rocha is February, with 11.3 days that are muggy or worse.

The month with the fewest muggy days in Rocha is July, with 0.1 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 Rocha experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.5 months, from August 17 to March 1, with average wind speeds of more than 8.7 miles per hour. The windiest month of the year in Rocha is November, with an average hourly wind speed of 9.3 miles per hour.

The calmer time of year lasts for 5.5 months, from March 1 to August 17. The calmest month of the year in Rocha is May, with an average hourly wind speed of 8.2 miles per hour.

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

The wind is most often from the north for 1.5 months, from April 8 to May 24 and for 1.6 months, from July 17 to September 6, with a peak percentage of 31% on August 10. The wind is most often from the west for 1.8 months, from May 24 to July 17, with a peak percentage of 35% on June 14. The wind is most often from the east for 7.1 months, from September 6 to April 8, with a peak percentage of 41% on January 1.

Rocha 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 3.7 months, from December 19 to April 10, with an average temperature above 69°F. The month of the year in Rocha with the warmest water is February, with an average temperature of 72°F.

The time of year with cooler water lasts for 3.6 months, from June 15 to October 2, with an average temperature below 57°F. The month of the year in Rocha with the coolest water is August, with an average temperature of 53°F.

To characterize how pleasant the weather is in Rocha 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 Rocha for general outdoor tourist activities is from late October to mid April, with a peak score in the first week of December.

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 Rocha for hot-weather activities is from mid December to early 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 Rocha typically lasts for 11 months (326 days), from around July 30 to around June 22, rarely starting after September 7, or ending before May 28.

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 Rocha should appear around July 26, only rarely appearing before July 17 or after August 11.

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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.1 months, from November 6 to February 9, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest month of the year in Rocha is December, with an average of 7.9 kWh.

The darker period of the year lasts for 3.7 months, from April 28 to August 18, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year in Rocha is June, with an average of 2.4 kWh.

For the purposes of this report, the geographical coordinates of Rocha are -34.483 deg latitude, -54.333 deg longitude, and 98 ft elevation.

The topography within 2 miles of Rocha contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 73 feet. Within 10 miles contains only modest variations in elevation (1,076 feet). Within 50 miles also contains very significant variations in elevation (1,729 feet).

The area within 2 miles of Rocha is covered by trees (36%), artificial surfaces (30%), and grassland (28%), within 10 miles by grassland (56%) and trees (20%), and within 50 miles by water (39%) and grassland (38%).