Climate and Average Weather Year Round in Las Tunas Cuba

In Las Tunas, the summers are hot, oppressive, and overcast and the winters are warm, muggy, dry, windy, and mostly clear. Over the course of the year, the temperature typically varies from 66°F to 93°F and is rarely below 60°F or above 96°F.

Based on the beach/pool score, the best time of year to visit Las Tunas for hot-weather activities is from mid November to early May.

The hot season lasts for 3.2 months, from June 15 to September 21, with an average daily high temperature above 91°F. The hottest month of the year in Las Tunas is July, with an average high of 92°F and low of 75°F.

The cool season lasts for 3.1 months, from November 17 to February 20, with an average daily high temperature below 85°F. The coldest month of the year in Las Tunas is January, with an average low of 66°F and high of 83°F.

In Las Tunas, 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 Las Tunas begins around November 10 and lasts for 6.0 months, ending around May 9.

The clearest month of the year in Las Tunas is February, during which on average the sky is clear, mostly clear, or partly cloudy 83% of the time.

The cloudier part of the year begins around May 9 and lasts for 6.0 months, ending around November 10.

The cloudiest month of the year in Las Tunas is June, during which on average the sky is overcast or mostly cloudy 73% 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 Las Tunas varies throughout the year.

The wetter season lasts 6.0 months, from May 4 to November 5, with a greater than 18% chance of a given day being a wet day. The month with the most wet days in Las Tunas is October, with an average of 8.1 days with at least 0.04 inches of precipitation.

The drier season lasts 6.0 months, from November 5 to May 4. The month with the fewest wet days in Las Tunas is January, with an average of 2.0 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 Las Tunas is October, with an average of 8.1 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 31% on October 6.

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. Las Tunas experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Las Tunas. The month with the most rain in Las Tunas is October, with an average rainfall of 2.5 inches.

The month with the least rain in Las Tunas is January, with an average rainfall of 0.5 inches.

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

The earliest sunrise is at 6:11 AM on November 3, and the latest sunrise is 1 hour, 9 minutes later at 7:20 AM on March 10. The earliest sunset is at 5:25 PM on November 26, and the latest sunset is 2 hours, 28 minutes later at 7:53 PM on July 3.

Daylight saving time (DST) is observed in Las Tunas during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

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.

Las Tunas experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.1 months, from April 4 to January 9, during which time the comfort level is muggy, oppressive, or miserable at least 57% of the time. The month with the most muggy days in Las Tunas is August, with 30.4 days that are muggy or worse.

The month with the fewest muggy days in Las Tunas is February, with 12.9 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 Las Tunas experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.7 months, from October 27 to May 17, with average wind speeds of more than 9.1 miles per hour. The windiest month of the year in Las Tunas is December, with an average hourly wind speed of 10.5 miles per hour.

The calmer time of year lasts for 5.3 months, from May 17 to October 27. The calmest month of the year in Las Tunas is September, with an average hourly wind speed of 7.9 miles per hour.

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

Las Tunas 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 4.0 months, from June 21 to October 23, with an average temperature above 84°F. The month of the year in Las Tunas with the warmest water is September, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.4 months, from December 19 to March 30, with an average temperature below 79°F. The month of the year in Las Tunas with the coolest water is February, with an average temperature of 78°F.

To characterize how pleasant the weather is in Las Tunas 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 Las Tunas for general outdoor tourist activities is from early December to late March, with a peak score in the last week of January.

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 Las Tunas for hot-weather activities is from mid November to early May, with a peak score in the last week of March.

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 Las Tunas 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 1.8 months, from March 12 to May 7, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest month of the year in Las Tunas is April, with an average of 6.8 kWh.

The darker period of the year lasts for 4.8 months, from August 28 to January 20, with an average daily incident shortwave energy per square meter below 4.9 kWh. The darkest month of the year in Las Tunas is December, with an average of 4.5 kWh.

For the purposes of this report, the geographical coordinates of Las Tunas are 20.962 deg latitude, -76.951 deg longitude, and 299 ft elevation.

The topography within 2 miles of Las Tunas contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 300 feet. Within 10 miles also contains only modest variations in elevation (358 feet). Within 50 miles contains only modest variations in elevation (1,109 feet).

The area within 2 miles of Las Tunas is covered by artificial surfaces (69%) and cropland (19%), within 10 miles by cropland (70%) and trees (18%), and within 50 miles by cropland (46%) and water (20%).