May is one of the warmer months of the year in Jacksonville, with average highs near 31°C and lows around 18.5°C (mean 24.8°C). It is one of the drier months, averaging 77 mm of rainfall and 68% relative humidity across the period.
May is one of the warmer months of the year in Jacksonville. Across 45 years of records, the warmest May in Jacksonville was 2019 — when the month averaged 27.3°C — while the coldest was 2013 at 22.2°C. Typical May days reach 31°C with nights near 18.5°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Jacksonville, averaging 77 mm of rainfall. The wettest May on record was 2009 with 269 mm, while the driest was 2007 at 22 mm.
Relative humidity in Jacksonville during May averages 68%. The most humid May was 1991 at 85%, and the least humid was 1981 at 54%.
May receives about 6.5 kWh/m²/day of solar energy in Jacksonville. The sunniest Mays were 2000, 2011 and 2015 at 7 kWh/m²/day, and the cloudiest was 2009 at 5.6.
Average wind speed in Jacksonville during May is 0.7 m/s. The windiest Mays were 2002, 2007 and 2008 at 0.8 m/s, while the calmest were 2022, 2024 and 2025, among others at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.0°C | 24.7°C | 24.9°C | 25.1°C | 25.4°C | +1.4°C |
| Avg High | 30.3°C | 30.8°C | 31.3°C | 31.2°C | 31.6°C | +1.3°C |
| Avg Low | 17.6°C | 18.6°C | 18.5°C | 18.9°C | 19.2°C | +1.6°C |
| Avg Rain | 61 mm | 65 mm | 70 mm | 107 mm | 83 mm | +22 mm |
May temperatures in Jacksonville have risen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 7.6°C (1992) to a record high of 41°C (2019).
Rainfall in May is one of the drier months, averaging 77 mm, with a wettest year of 269 mm.
One of the best times to visit Jacksonville
May is one of the best times to visit Jacksonville. Expect days averaging 31°C and nights around 18.5°C (mean 24.8°C) — warmer than Jacksonville's yearly average — with moderate rainfall (77 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 33.4°C | 26.8°C | 20.2°C | 38.2°C | 16.5°C | 123 mm | 69% | 0.6 m/s | 6.3 |
| 2024 | 32.7°C | 26.8°C | 20.8°C | 36.8°C | 18.3°C | 100 mm | 72% | 0.6 m/s | 6.4 |
| 2023 | 30.0°C | 24.2°C | 18.4°C | 35.6°C | 10.8°C | 112 mm | 73% | 0.7 m/s | 5.9 |
| 2022 | 31.9°C | 25.9°C | 19.9°C | 37.4°C | 13.5°C | 81 mm | 71% | 0.6 m/s | 6.7 |
| 2021 | 31.0°C | 24.5°C | 18.1°C | 36.5°C | 10.1°C | 24 mm | 64% | 0.7 m/s | 6.7 |
| 2020 | 30.3°C | 24.2°C | 18.0°C | 36.1°C | 10.2°C | 59 mm | 69% | 0.7 m/s | 6.5 |
| 2019 🔥 | 33.9°C | 27.3°C | 20.7°C | 41.0°C | 16.2°C | 56 mm | 65% | 0.6 m/s | 6.9 |
| 2018 | 29.6°C | 24.6°C | 19.7°C | 35.6°C | 13.7°C | 193 mm | 78% | 0.6 m/s | 5.8 |
| 2017 | 32.4°C | 25.5°C | 18.6°C | 37.3°C | 11.3°C | 136 mm | 63% | 0.7 m/s | 6.8 |
| 2016 | 31.4°C | 24.9°C | 18.4°C | 36.5°C | 9.8°C | 92 mm | 66% | 0.6 m/s | 6.8 |
| 2015 | 31.7°C | 25.6°C | 19.4°C | 36.3°C | 12.1°C | 30 mm | 67% | 0.7 m/s | 7 |
| 2014 | 29.4°C | 23.6°C | 17.9°C | 35.4°C | 11.3°C | 103 mm | 77% | 0.6 m/s | 6.4 |
| 2013 ❄️ | 27.6°C | 22.2°C | 16.7°C | 31.5°C | 9.3°C | 146 mm | 76% | 0.7 m/s | 6.4 |
| 2012 | 31.2°C | 25.3°C | 19.5°C | 35.9°C | 14.6°C | 209 mm | 72% | 0.7 m/s | 6.2 |
| 2011 | 32.6°C | 25.3°C | 17.9°C | 39.0°C | 11.4°C | 36 mm | 62% | 0.7 m/s | 7 |
| 2010 | 32.6°C | 26.4°C | 20.2°C | 35.5°C | 15.7°C | 73 mm | 70% | 0.6 m/s | 6.8 |
| 2009 🌧️ | 29.0°C | 24.1°C | 19.3°C | 35.5°C | 14.8°C | 269 mm | 79% | 0.7 m/s | 5.6 |
| 2008 | 31.3°C | 24.8°C | 18.3°C | 37.1°C | 12.1°C | 41 mm | 65% | 0.8 m/s | 6.7 |
| 2007 | 30.1°C | 23.9°C | 17.8°C | 33.8°C | 13.3°C | 22 mm | 63% | 0.8 m/s | 6.5 |
| 2006 | 32.5°C | 25.4°C | 18.2°C | 37.8°C | 12.4°C | 52 mm | 60% | 0.7 m/s | 6.7 |
| 2005 | 28.7°C | 22.9°C | 17.0°C | 34.5°C | 11.8°C | 97 mm | 74% | 0.6 m/s | 6.3 |
| 2004 | 32.7°C | 26.1°C | 19.4°C | 38.5°C | 10.2°C | 42 mm | 64% | 0.7 m/s | 6.8 |
| 2003 | 30.8°C | 25.1°C | 19.4°C | 35.2°C | 14.6°C | 80 mm | 75% | 0.6 m/s | 6.4 |
| 2002 | 31.8°C | 25.3°C | 18.7°C | 37.5°C | 12.7°C | 38 mm | 65% | 0.8 m/s | 6.6 |
| 2001 | 32.5°C | 25.3°C | 18.1°C | 37.7°C | 15.2°C | 36 mm | 60% | 0.7 m/s | 6.7 |
| 2000 | 33.2°C | 26.1°C | 19.1°C | 38.3°C | 12.6°C | 23 mm | 61% | 0.7 m/s | 7 |
| 1999 | 31.1°C | 24.5°C | 17.9°C | 36.1°C | 8.3°C | 33 mm | 64% | 0.7 m/s | 6.4 |
| 1998 | 30.8°C | 25.0°C | 19.2°C | 36.8°C | 14.7°C | 27 mm | 75% | 0.6 m/s | 6.6 |
| 1997 | 28.4°C | 23.0°C | 17.6°C | 32.1°C | 9.2°C | 102 mm | 75% | 0.6 m/s | 6.1 |
| 1996 | 32.6°C | 26.0°C | 19.3°C | 36.0°C | 9.1°C | 41 mm | 66% | 0.6 m/s | 6.8 |
| 1995 | 32.5°C | 26.0°C | 19.5°C | 37.0°C | 12.7°C | 69 mm | 67% | 0.7 m/s | 6.3 |
| 1994 | 31.1°C | 24.7°C | 18.3°C | 35.8°C | 12.0°C | 60 mm | 66% | 0.6 m/s | 6.4 |
| 1993 | 30.2°C | 23.9°C | 17.7°C | 35.6°C | 13.6°C | 39 mm | 67% | 0.7 m/s | 6.3 |
| 1992 | 29.6°C | 23.0°C | 16.5°C | 35.2°C | 7.6°C | 73 mm | 68% | 0.7 m/s | 6.2 |
| 1991 | 29.3°C | 25.3°C | 21.2°C | 34.7°C | 18.3°C | 172 mm | 85% | 0.6 m/s | 6 |
| 1990 | 32.5°C | 25.8°C | 19.1°C | 38.7°C | 13.2°C | 35 mm | 62% | 0.7 m/s | 6.6 |
| 1989 | 31.1°C | 24.4°C | 17.6°C | 38.5°C | 10.1°C | 50 mm | 63% | 0.7 m/s | 6.4 |
| 1988 | 29.5°C | 23.0°C | 16.4°C | 35.9°C | 11.4°C | 54 mm | 66% | 0.7 m/s | 6.3 |
| 1987 | 28.8°C | 23.6°C | 18.4°C | 33.2°C | 14.0°C | 38 mm | 76% | 0.6 m/s | 6.2 |
| 1986 | 31.4°C | 24.5°C | 17.6°C | 37.6°C | 12.0°C | 63 mm | 63% | 0.7 m/s | 6.5 |
| 1985 | 31.8°C | 25.1°C | 18.4°C | 37.6°C | 14.8°C | 78 mm | 63% | 0.6 m/s | 6.5 |
| 1984 | 28.6°C | 23.1°C | 17.6°C | 32.7°C | 10.1°C | 81 mm | 74% | 0.6 m/s | 5.9 |
| 1983 | 28.6°C | 22.9°C | 17.3°C | 32.1°C | 10.7°C | 49 mm | 76% | 0.6 m/s | — |
| 1982 | 30.4°C | 24.3°C | 18.1°C | 34.7°C | 13.7°C | 90 mm | 70% | 0.6 m/s | — |
| 1981 | 32.7°C | 25.0°C | 17.2°C | 38.2°C | 11.7°C | 42 mm | 54% | 0.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 31°C with lows near 18.5°C (mean 24.8°C), based on 45 years of NASA POWER data.
May averages 77 mm of rainfall in Jacksonville, one of the drier months. The wettest on record was 269 mm in 2009.
The hottest May reached 41°C in 2019. The coldest dipped to 7.6°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.5°C. Daytime highs moved from 30.4°C to 31.8°C and overnight lows from 17.7°C to 19.5°C over the same span.
May is one of the warmer months of the year in Jacksonville and one of the drier months, so plan for around 31°C daytime highs and 18.5°C at night.
Not quite — May is the 8th coolest month in Jacksonville, averaging 24.8°C.
For May in Jacksonville, pack light, breathable clothing and sun protection, with typical highs of 31°C and lows of 18.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 68% — moderately humid.
Average wind speed in May is 0.7 m/s. The windiest May on record averaged 0.8 m/s (2002).
The wettest May on record was 2009 with 269 mm. On average, May sees 77 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Jacksonville behaves each May, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for May specifically, along with year-by-year records and how the month has changed over the decades.
