Measurements:
°C
°F
Tinian
88°F
NW 11 mph
Feels like: 98°F
Precip: 100%
World Resorts Northern Mariana Islands Tinian Weather September Weather in Tinian

Tinian Weather: September

Average Day Temperature: 90.7°F
Average Night Temperature: 87.6°F
Sea Water Temperature: 89.3°F
Number of Sunny Days: 4 days
Sunshine Hours: 12.0 - 12.4 hours
Number of Rainy Days: 13 days
Precipitation Totals: 8.3 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 88°F. The lowest night temperature was 82°F. The average values for day and night temperatures during September were 87.6°F и 86.9°F respectivly.

Tinian Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Tinian was 89.1°F. The maximum and minimum values were 88.0°F and 89.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Tinian is 8.3 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 11.6 mph. It makes September the most windless month of the year for Tinian.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Tinian in September is 5.8 hours.

Best Time to Visit Tinian
The most sunny months:
July 5 days
September 4 days
August 4 days
The most warm months:
July 91.1 °F
August 91.0 °F
June 90.9 °F
Warmest sea temperature:
August 89.4 °F
September 89.3 °F
July 89.3 °F
The most cold months:
February 85.6 °F
January 86.6 °F
March 86.6 °F
The most rainy months:
October 14 days
August 13 days
September 13 days
The most windy months:
December 19 mph
February 19 mph
January 18 mph

Tinian on the Weather Map

Northern Mariana Islands Resorts:
NAME
Guam +86
Rota +88
Saipan +88
Susupe +88
Tinian +88
24 Hours Weather Forecast
Tinian
Local time: 18:03
05 dec, friday
2100 86°F
W
12 mph
06 dec, saturday
0000 86°F
W
12 mph
0300 86°F
W
14 mph
0600 88°F
W
15 mph
0900 88°F
W
16 mph
1200 88°F
W
15 mph
1500 88°F
W
14 mph
1800 88°F
W
11 mph