Measurements:
°C
°F
Tinian
86°F
N 52 mph
Feels like: 96°F
Precip: 47%
World Resorts Northern Mariana Islands Tinian Weather

Tinian Sea Water Temperature

Current Sea Water Temperature:
+89.0°F
Maximum Sea Water Temperature in July: 91.8°F
Minimum Sea Water Temperature in July: 87.2°F
Average water temperature in July: 89.3°F

Sea Water Temperature for the Last 10 Days:

July 05 89.0°F June 30 88.6°F
July 04 89.2°F June 29 89.2°F
July 03 89.0°F June 28 88.8°F
July 02 89.0°F June 27 88.6°F
July 01 88.6°F June 26 88.4°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Tinian was 89.1°F. The maximum and minimum values were 87.8°F and 89.6°F respectively.

Sea Water Temperature in September

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.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Tinian was 88.9°F. The maximum and minimum values were 87.6°F and 89.8°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 91.1 °F
August 91.0 °F
June 90.7 °F
Warmest sea temperature:
August 89.4 °F
September 89.3 °F
July 89.3 °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 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 +82
Rota +82
Saipan +86
Susupe +86
Tinian +86
24 Hours Weather Forecast
Tinian
Local time: 17:20
06 jul, monday
1800 86°F
N
52 mph
2100 86°F
N
45 mph
07 jul, tuesday
0000 86°F
N
39 mph
0300 88°F
N
35 mph
0600 86°F
N
33 mph
0900 86°F
N
30 mph
1200 88°F
NW
28 mph
1500 86°F
N
25 mph