Jacksonville climate
Jacksonville is warmest in July, with average highs of 32 °C, and coldest in January, when nights average 9.1 °C. August is the wettest month (149 mm) and November the driest (44 mm). Figures are 1991–2020 climate normals.
Across a full year Jacksonville averages 1,057 mm of rain, 207 days above 25 °C and 3 days below freezing.
United States · 5 m elevation · population 1,009,833 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month July 32 °C
- Coldest month January 9.1 °C
- Driest month November 44 mm
- Wettest month August 149 mm
- Least cloud May 46 % cloud
- Hottest on record August 38 °C
- Coldest on record February -4.0 °C
- Warmest sea August 28 °C
What to expectJacksonville through the year
Jacksonville has a clear annual cycle: average daily highs run from 18 °C in January to 32 °C in July, a swing of 15 °C in mean temperature across the year.
Counted across a normal year, 207 days a year reach 25 °C, 88 of them reach 30 °C, 3 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in August.
Rain is strongly seasonal. August averages 149 mm against 44 mm in November — 3.4 times as much. Planning around the dry months matters more here than planning around temperature.
The sea off Jacksonville is warmest in August at 28 °C and coldest in February at 16 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 17.7 °C | 68 mm | 55 % |
| February | 19.6 °C | 65 mm | 54 % |
| March | 22.5 °C | 75 mm | 50 % |
| April | 25.7 °C | 61 mm | 47 % |
| May | 29.0 °C | 67 mm | 46 % |
| June | 30.7 °C | 136 mm | 59 % |
| July | 31.7 °C | 130 mm | 60 % |
| August | 30.9 °C | 149 mm | 62 % |
| September | 29.0 °C | 127 mm | 60 % |
| October | 25.9 °C | 75 mm | 49 % |
| November | 21.9 °C | 44 mm | 50 % |
| December | 19.0 °C | 61 mm | 56 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 17.7 °C | 9.1 °C | 12.8 °C | 26.6 °C | -3.9 °C | 1 | 0 | 2 |
| February | 19.6 °C | 10.5 °C | 14.4 °C | 29.0 °C | -4.0 °C | 3 | 0 | 1 |
| March | 22.5 °C | 12.9 °C | 17.1 °C | 33.4 °C | -1.1 °C | 9 | 0 | 0 |
| April | 25.7 °C | 16.0 °C | 20.4 °C | 34.0 °C | 4.7 °C | 18 | 3 | 0 |
| May | 29.0 °C | 19.6 °C | 24.0 °C | 36.2 °C | 8.9 °C | 28 | 12 | 0 |
| June | 30.7 °C | 22.9 °C | 26.3 °C | 37.7 °C | 16.6 °C | 30 | 18 | 0 |
| July | 31.7 °C | 24.2 °C | 27.4 °C | 38.1 °C | 20.5 °C | 31 | 24 | 0 |
| August | 30.9 °C | 24.2 °C | 27.0 °C | 38.3 °C | 20.4 °C | 31 | 20 | 0 |
| September | 29.0 °C | 22.9 °C | 25.5 °C | 36.0 °C | 15.2 °C | 29 | 9 | 0 |
| October | 25.9 °C | 18.8 °C | 21.9 °C | 32.3 °C | 4.3 °C | 21 | 1 | 0 |
| November | 21.9 °C | 14.0 °C | 17.5 °C | 30.1 °C | 0.8 °C | 6 | 0 | 0 |
| December | 19.0 °C | 10.9 °C | 14.3 °C | 27.6 °C | -3.1 °C | 2 | 0 | 1 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind | Sea temp |
|---|---|---|---|---|---|---|---|
| January | 68 mm | 8 | 10 h/day | 55 % | 76 % | 16 km/h | 16.4 °C |
| February | 65 mm | 7 | 11 h/day | 54 % | 75 % | 17 km/h | 16.1 °C |
| March | 75 mm | 7 | 12 h/day | 50 % | 71 % | 18 km/h | 17.3 °C |
| April | 61 mm | 7 | 13 h/day | 47 % | 70 % | 17 km/h | 20.3 °C |
| May | 67 mm | 9 | 14 h/day | 46 % | 71 % | 16 km/h | 23.9 °C |
| June | 136 mm | 18 | 14 h/day | 59 % | 78 % | 14 km/h | 26.8 °C |
| July | 130 mm | 20 | 14 h/day | 60 % | 80 % | 13 km/h | 27.8 °C |
| August | 149 mm | 21 | 13 h/day | 62 % | 82 % | 13 km/h | 28.0 °C |
| September | 127 mm | 16 | 12 h/day | 60 % | 82 % | 15 km/h | 27.9 °C |
| October | 75 mm | 9 | 11 h/day | 49 % | 78 % | 15 km/h | 25.3 °C |
| November | 44 mm | 6 | 11 h/day | 50 % | 77 % | 16 km/h | 21.2 °C |
| December | 61 mm | 6 | 10 h/day | 56 % | 78 % | 15 km/h | 18.4 °C |
Where Jacksonville ranks
| Ranking | Position | Value |
|---|---|---|
| Places with the best weather in North America in March | 15thof 50 | 92/100 |
Planning a trip? See the best time to visit Jacksonville.
QuestionsCommon questions about Jacksonville’s climate
When is the best time to visit Jacksonville?
That depends on what you want, so the honest answer is a comparison rather than a single month. April, October, November sit closest to 20 °C on average, July is the warmest month and November the driest. The month-by-month table above has the full picture.
How hot does Jacksonville get?
In July, the warmest month, daily highs average 32 °C. About 88 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.
How cold does it get in winter?
Nights average 9.1 °C in January, the coldest month. A normal year has 3 nights below freezing.
Which month is wettest in Jacksonville?
August, averaging 149 mm over 21 days with rain. The driest month is November with 44 mm. The year as a whole averages 1,057 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Jacksonville rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.