Jacksonville weather in September
September is a fair month to visit Jacksonville: highs of 30°C (86°F) and about 147 mm (5.8 in) of rain on average. Nights average 21°C (70°F) and cloud cover 59% (NASA POWER, 2001–2025 averages). It is the 4th wettest month of the year and the 5th warmest. Compared with August, it is cooler and drier; October brings highs of 27°C (80°F) and 82 mm (3.2 in) of rain.
Is September a good time to visit Jacksonville?
fair month Weather score 64/100.
September is a fair month in Jacksonville. The weather is usually best in Feb–May, Oct–Nov.
Does it rain a lot in Jacksonville in September?
Some rain is normal: about 147 mm (5.8 in) falls in an average September. It is the 4th wettest month of the year.
How warm is Jacksonville in September?
Days average 30°C (86°F) and nights 21°C (70°F).
Jacksonville weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 17°C (63°F) | 5°C (42°F) | 73 mm | 64% | fair |
| February | 20°C (67°F) | 7°C (45°F) | 81 mm | 62% | best |
| March | 23°C (73°F) | 10°C (51°F) | 82 mm | 51% | best |
| April | 27°C (81°F) | 14°C (58°F) | 76 mm | 46% | best |
| May | 31°C (87°F) | 18°C (65°F) | 91 mm | 45% | best |
| June | 32°C (89°F) | 22°C (71°F) | 187 mm | 57% | least pleasant |
| July | 32°C (90°F) | 23°C (73°F) | 158 mm | 57% | least pleasant |
| August | 32°C (89°F) | 23°C (73°F) | 176 mm | 58% | least pleasant |
| September | 30°C (86°F) | 21°C (70°F) | 147 mm | 59% | fair |
| October | 27°C (80°F) | 16°C (61°F) | 82 mm | 51% | best |
| November | 22°C (72°F) | 11°C (51°F) | 53 mm | 56% | best |
| December | 19°C (66°F) | 8°C (46°F) | 80 mm | 66% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months