Weather in Jacksonville in July

A hard month. July asks something of you. Go in knowing what. You should expect rain on 23 days of the month, which is more days wet than dry.

July ranks 12 of 12 — near the bottom of Jacksonville's year. November is the month that works, and the swing between the two is 48 points, which is a different holiday rather than a slightly better one.

Rain on 23 of the month's 31 days, 5 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Pack for 32.9 °C days and 23.3 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 6 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest July day reached 40.1 °C and the coldest night fell to 18.5 °C, and the wettest single day dropped 36 mm — roughly 23% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 210 mm against 83 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 158 mm average is a reasonable planning figure, not a promise.

Wind is light at 1.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 79%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 32.4 °C in June, 32.9 here, 32.6 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Jacksonville's year: 13.9 hours of daylight, losing 0.4 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 28.1 °C in July — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Jacksonville versus nearby

If Jacksonville is one option among several, the nearby comparison is worth making. Tallahassee is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Tampa is a better bet in July — 2.2 °C cooler, 5 days more rain.

So: July is a compromise. November is 48 points better and is what Jacksonville is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Jacksonville

See all twelve months in Jacksonville, or where else to go in July.