Jacksonville is warmest in July, averaging 33° by day and 23° at night. The wettest month is August with 205 mm, and the year brings about 1302 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 19° | 6° | 53 mm | 15° | 10.2 h | Sightseeing |
| February | 22° | 9° | 81 mm | 15° | 10.9 h | Sightseeing |
| March | 25° | 11° | 96 mm | 17° | 11.8 h | Beach weather |
| April | 27° | 15° | 93 mm | 21° | 12.7 h | Beach weather |
| May | 31° | 19° | 74 mm | 24° | 13.5 h | Beach weather |
| June | 33° | 22° | 150 mm | 27° | 13.9 h | Mild |
| July | 33° | 23° | 198 mm | 28° | 13.8 h | Rainy season |
| August | 33° | 24° | 205 mm | 28° | 13.1 h | Rainy season |
| September | 30° | 22° | 162 mm | 28° | 12.2 h | Mild |
| October | 27° | 17° | 68 mm | 25° | 11.2 h | Beach weather |
| November | 23° | 12° | 63 mm | 21° | 10.4 h | Sightseeing |
| December | 20° | 9° | 59 mm | 17° | 10.1 h | Sightseeing |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: March, April, May and October — highs around 28°, nights no colder than 11°, and at most 96 mm of rain in a month. The sea sits at 17–25° then.
Walking the city: January, February, November and December — highs of 19–23° and no more than 81 mm of rain a month.
Wet season: July and August — up to 205 mm in a single month.