Weather in Orlando in September

How September compares

September is the 5th warmest month of the year in Orlando and ranks 16th of 134 destinations we compare for September - see where else is hot in September. Within United States it is 2nd of 6 (United States in September). Against London's average high of 18.6°C in September, Orlando is 11.3°C warmer by day and 11.9°C warmer at night.

Daytime and night-time in September

The typical September day in Orlando peaks at 29.9°C, but that is an average: the warmest 10% of days reach 31.7°C or more. About 99% of days top 25°C and 1 in 2 pass 30°C. Nights average 23.1°C; one night in ten drops to 21.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest September day here reached 33.7°C (2019-09-17) and the coldest night 17.6°C (2001-09-17).

Rain in September

Wet (more than 8 rainy days): about 19 days with 1 mm or more, 146 mm in total. Year to year it varies a lot - the wettest September was 2004 with 377 mm, the driest 1991 with 52 mm. Humidity averages 82%, which makes the heat feel heavier than the thermometer suggests.

Sunshine and daylight

Around 4.7 hours of sunshine a day (estimated from cloud cover), 12.2 hours of daylight: the sun rises about 07:11 and sets about 19:31 local time in mid-September. Average cloud cover is 62%.

Is September a good time to visit Orlando?

It is a reasonable choice: hot days but expect showers. The best months for Orlando on our scoring are April, November, March; months averaging 25°C or more: Apr, May, Jun, Jul, Aug, Sep, Oct.

Expect heat that lasts into the evening

The main catch is the combination of heat and humidity, rather than the daytime temperature alone. Humidity averages 82%, so allow for sticky conditions and choose light, breathable clothes. With 53% of days reaching 30°C, it makes sense to keep strenuous outdoor plans away from midday and leave room for shaded or indoor breaks. Nights average 23.1°C, so evenings offer limited cooling rather than a crisp change of temperature. Even the colder end of the usual night-time range is mild: the coldest 10% of nights reach 21.5°C or lower. Pack mainly for warmth, with an extra layer if you prefer one indoors.

Make room for rain, not just sunshine

September is wet enough that outdoor-only plans are a poor bet. About 19 days have at least 1 mm of rain, so take a light waterproof and choose footwear you will not mind getting wet. That does not tell you how long each wet spell will last, so avoid building your plans around rain always passing quickly or arriving at a particular time. Sunshine averages 4.7 hours within 12.2 hours of daylight: there is time to be outdoors, but daylight should not be confused with clear skies. This month works better with a flexible schedule and indoor alternatives than with a tightly arranged run of outdoor days.