Measurements:
°C
°F
Tinian
84°F
NW 17 mph
Feels like: 92°F
Precip: 71%
World Resorts Northern Mariana Islands Tinian Weather

Tinian Sea Water Temperature

Current Sea Water Temperature:
+87.4°F
Maximum Sea Water Temperature in October: 90.6°F
Minimum Sea Water Temperature in October: 86.4°F
Average water temperature in October: 88.8°F

Sea Water Temperature for the Last 10 Days:

October 18 87.4°F October 13 88.2°F
October 17 88.2°F October 12 87.8°F
October 16 88.6°F October 11 88.0°F
October 15 88.8°F October 10 88.2°F
October 14 88.8°F October 09 87.6°F

When is the Warmest Sea for Tinian?

According to our data for the last three years for Tinian the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Tinian was 89.4°F. The maximum and minimum values were 88.4°F and 90.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Tinian was 89.8°F. The maximum and minimum values were 89.0°F and 91.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Tinian was 88.2°F. The maximum and minimum values were 86.6°F and 90.0°F respectively.

Best Time to Visit Tinian
The most sunny months:
July 5 days
September 4 days
August 4 days
The most warm months:
July 90.8 °F
August 90.7 °F
June 90.7 °F
Warmest sea temperature:
August 89.4 °F
September 89.4 °F
July 89.2 °F
The most cold months:
February 85.6 °F
March 86.4 °F
January 86.5 °F
The most rainy months:
October 14 days
August 13 days
September 12 days
The most windy months:
December 19 mph
February 19 mph
January 18 mph

Tinian on the Weather Map

Northern Mariana Islands Resorts:
NAME
F°
Guam +84
Rota +82
Saipan +84
Susupe +84
Tinian +84
24 Hours Weather Forecast
Tinian
Local time: 15:53
19 oct, monday
1800 84°F
NW
16 mph
2100 86°F
NW
12 mph
20 oct, tuesday
0000 84°F
NW
11 mph
0300 84°F
W
11 mph
0600 84°F
W
10 mph
0900 84°F
W
9 mph
1200 86°F
W
8 mph
1500 86°F
W
8 mph