September weather forecastFīti'i, French Polynesia
September
Weather in September
Following August’s mildly wet conditions, Fīti'i transitions into September, where further changes to the weather occur. The city’s climatic profile takes a turn towards increased daylight hours and cloud coverage. The rainfall drops to 42mm (1.65") making this month being one of the driest of the year. Along with a pleasant rise in temperatures, this month is well suited for outdoor activities. However, as September ends, the transition towards the later part of the year emerges.Temperature
The introduction of September notes a subtle temperature variation to a still moderately hot 26.1°C (79°F) from August's 25.9°C (78.6°F). During the nights of September, Fīti'i records an average low-temperature of 25.4°C (77.7°F), reflecting a modest decrease from daytime highs.Humidity
In September, the average relative humidity in Fīti'i is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 21.1 days and typically collects 42mm (1.65") of precipitation.Sea temperature
The month with the coldest seawater is September, with an average sea temperature of 26.7°C (80.1°F).Note: Between the temperatures of 25°C (77°F) and 29°C (84.2°F), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.
Daylight
In September, the average length of the day in Fīti'i is 12h and 1min.On the first day of September, sunrise is at 06:09 and sunset at 17:57. On the last day of the month, sunrise is at 05:46 and sunset at 18:01 -10.
Sunshine
The average sunshine in September in Fīti'i is 8.3h.UV index
February through July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Fīti'i, French Polynesia. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fīti'i, French Polynesia
- Average high temperature in September: 26.1°C
The warmest months (with the highest average high temperature) are March and April (28.3°C).
The month with the lowest average high temperature is August (25.9°C).
- Average low temperature in September: 25.4°C
The month with the highest average low temperature is March (27.5°C).
The coldest month (with the lowest average low temperature) is August (25°C).
Average pressure in September
Fīti'i, French Polynesia
- Average pressure in September: 1014.6mbar
The month with the highest atmospheric pressure is September (1014.6mbar).
The month with the lowest atmospheric pressure is December (1010.5mbar).
Average wind speed in September
Fīti'i, French Polynesia
- Average wind speed in September: 25.3km/h
The windiest month (with the highest average wind speed) is July (25.7km/h).
The calmest month (with the lowest average wind speed) is March (17.8km/h).
Average humidity in September
Fīti'i, French Polynesia
- Average humidity in September: 77%
The month with the highest relative humidity is November (78%).
The months with the lowest relative humidity are January, February, March, April, June and December (76%).
Average rainfall in September
Fīti'i, French Polynesia
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is December (190mm).
The driest month (with the least rainfall) is September (42mm).
Average rainfall days in September
Fīti'i, French Polynesia
- Average rainfall days in September: 21.1 days
The months with the highest number of rainy days are January and December (25.2 days).
The month with the least rainy days is July (20.3 days).
Average sea temperature in September
Fīti'i, French Polynesia
- Average sea temperature in September: 26.7°C
The best month for swimming (with the highest average sea temperature) is March (28.9°C).
The coldest month (with the lowest average sea temperature) is September (26.7°C).
Average daylight in September /
Average sunshine in September
Fīti'i, French Polynesia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 6min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is December (Average sunshine: 9h and 48min).
The month with the least sunshine is August (Average sunshine: 5h and 42min).
Average sunshine days in September
Fīti'i, French Polynesia
- Average sunshine days in September: 3.9 days
The months with the most sunshine days are January and August (4.7 days).
The months with the least sunshine days are March and April (3.4 days).
Average UV index in September
Fīti'i, French Polynesia
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, September, October, November and December (UV index 7).
The months with the lowest UV index are January and August (UV index 6).
Average cloud cover in September
Fīti'i, French Polynesia
- Average cloud cover in September: 45
The months with the most cloud cover are January and August (Cloud cover 47).
The month with the least cloud cover is April (Cloud cover 41).
Average visibility in September
Fīti'i, French Polynesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
