Climate and Average Weather Year Round in Gainesville Florida, United States

In Gainesville, the summers are long, hot, oppressive, and mostly cloudy; the winters are short, cool, and partly cloudy; and it is wet year round. Over the course of the year, the temperature typically varies from 44°F to 90°F and is rarely below 30°F or above 94°F.

Based on the tourism score, the best times of year to visit Gainesville for warm-weather activities are from late March to late May and from early October to mid November.

The hot season lasts for 4.5 months, from May 11 to September 26, with an average daily high temperature above 85°F. The hottest month of the year in Gainesville is July, with an average high of 90°F and low of 72°F.

The cool season lasts for 2.7 months, from December 3 to February 24, with an average daily high temperature below 71°F. The coldest month of the year in Gainesville is January, with an average low of 45°F and high of 67°F.

In Gainesville, 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 Gainesville begins around September 23 and lasts for 8.5 months, ending around June 6.

The clearest month of the year in Gainesville is April, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around June 6 and lasts for 3.5 months, ending around September 23.

The cloudiest month of the year in Gainesville is July, during which on average the sky is overcast or mostly cloudy 63% 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 Gainesville varies very significantly throughout the year.

The wetter season lasts 3.6 months, from June 1 to September 20, with a greater than 43% chance of a given day being a wet day. The month with the most wet days in Gainesville is July, with an average of 20.7 days with at least 0.04 inches of precipitation.

The drier season lasts 8.4 months, from September 20 to June 1. The month with the fewest wet days in Gainesville is November, with an average of 5.4 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 Gainesville is July, with an average of 20.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 69% on July 27.

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. Gainesville experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Gainesville. The month with the most rain in Gainesville is July, with an average rainfall of 6.0 inches.

The month with the least rain in Gainesville is November, with an average rainfall of 1.8 inches.

The length of the day in Gainesville varies significantly over the course of the year. In 2023, the shortest day is December 21, with 10 hours, 15 minutes of daylight; the longest day is June 21, with 14 hours, 3 minutes of daylight.

The earliest sunrise is at 6:28 AM on June 11, and the latest sunrise is 1 hour, 16 minutes later at 7:44 AM on November 4. The earliest sunset is at 5:29 PM on December 2, and the latest sunset is 3 hours, 4 minutes later at 8:33 PM on June 30.

Daylight saving time (DST) is observed in Gainesville during 2023, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

The figure below presents a compact representation of key lunar data for 2023. 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.

Gainesville experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.9 months, from May 4 to October 31, during which time the comfort level is muggy, oppressive, or miserable at least 27% of the time. The month with the most muggy days in Gainesville is August, with 30.6 days that are muggy or worse.

The month with the fewest muggy days in Gainesville is February, with 1.3 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 Gainesville experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.8 months, from October 2 to May 26, with average wind speeds of more than 5.3 miles per hour. The windiest month of the year in Gainesville is March, with an average hourly wind speed of 6.3 miles per hour.

The calmer time of year lasts for 4.2 months, from May 26 to October 2. The calmest month of the year in Gainesville is July, with an average hourly wind speed of 4.3 miles per hour.

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

The wind is most often from the west for 2.5 months, from February 15 to April 30 and for 2.5 months, from June 2 to August 17, with a peak percentage of 42% on July 16. The wind is most often from the east for 1.1 months, from April 30 to June 2 and for 2.0 months, from August 17 to October 18, with a peak percentage of 47% on September 11. The wind is most often from the north for 3.9 months, from October 18 to February 15, with a peak percentage of 36% on January 1.

Gainesville 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 significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 4.1 months, from May 31 to October 2, with an average temperature above 81°F. The month of the year in Gainesville with the warmest water is August, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.3 months, from December 15 to March 23, with an average temperature below 67°F. The month of the year in Gainesville with the coolest water is February, with an average temperature of 63°F.

To characterize how pleasant the weather is in Gainesville 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 Gainesville for general outdoor tourist activities are from late March to late May and from early October to mid November, with a peak score in the last week of April.

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 Gainesville for hot-weather activities are from early May to late June and from late August to mid October, with a peak score in the last week of May.

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 Gainesville typically lasts for 9.6 months (292 days), from around February 20 to around December 9, rarely starting before January 28 or after March 20, and rarely ending before November 14 or after January 1.

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 Gainesville should appear around January 12, only rarely appearing before January 8 or after January 19.

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 2.2 months, from April 3 to June 9, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Gainesville is May, with an average of 6.6 kWh.

The darker period of the year lasts for 2.7 months, from November 12 to February 2, with an average daily incident shortwave energy per square meter below 3.9 kWh. The darkest month of the year in Gainesville is December, with an average of 3.3 kWh.

For the purposes of this report, the geographical coordinates of Gainesville are 29.652 deg latitude, -82.325 deg longitude, and 174 ft elevation.

The topography within 2 miles of Gainesville contains only modest variations in elevation, with a maximum elevation change of 128 feet and an average elevation above sea level of 142 feet. Within 10 miles also contains only modest variations in elevation (148 feet). Within 50 miles also contains only modest variations in elevation (285 feet).

The area within 2 miles of Gainesville is covered by artificial surfaces (78%) and trees (15%), within 10 miles by herbaceous vegetation (39%) and trees (36%), and within 50 miles by trees (45%) and cropland (22%).