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Tanapag Harbor, Saipan Island, Marianas Sea Temperature in September

Saipan, Northern Mariana Islands

August Tanapag Harbor, Saipan Island, Marianas year-round → October

Average sea temperature for Tanapag Harbor, Saipan Island, Marianas, Northern Mariana Islands across September, based on 10 years of daily readings.

Average

29.97° C

High

31.52° C

Low

29.27° C

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

September is the 1st warmest of 12 months at Tanapag Harbor, Saipan Island, Marianas. On average the water sits 0.9° than the year-round mean of 29.08° C.

Compared to August, September is 0.0° about the same as (29.96° C in August). By October the water is usually 29.68° C.

Tanapag Harbor, Saipan Island, Marianas Day-by-Day Water Temperature in September

10-year low, average and high

28.5° C
29.5° C
30.5° C
31.5° C
32.5° C
1
5
10
15
20
25
30
Day-by-day low and high band with the 10-year daily average through September. Range Average

Each vertical bar above is one day of September. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Tanapag Harbor, Saipan Island, Marianas.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

September Water Temperature Table for Tanapag Harbor, Saipan Island, Marianas

10-year daily averages

Day Average Low High
September 1 29.89° C 29.49° C 30.2° C
September 2 29.84° C 29.3° C 30.26° C
September 3 29.95° C 29.31° C 30.46° C
September 4 30° C 29.49° C 30.58° C
September 5 30.03° C 29.58° C 30.58° C
September 6 30.08° C 29.58° C 30.57° C
September 7 30.09° C 29.77° C 30.44° C
September 8 30.07° C 29.56° C 30.49° C
September 9 30.22° C 29.43° C 31.52° C
September 10 30.09° C 29.35° C 30.7° C
September 11 30.03° C 29.44° C 30.48° C
September 12 29.96° C 29.54° C 30.48° C
September 13 29.9° C 29.46° C 30.47° C
September 14 29.93° C 29.66° C 30.39° C
September 15 29.92° C 29.41° C 30.43° C
September 16 29.93° C 29.39° C 30.4° C
September 17 29.91° C 29.28° C 30.44° C
September 18 29.89° C 29.47° C 30.33° C
September 19 29.85° C 29.27° C 30.12° C
September 20 29.88° C 29.27° C 30.19° C
September 21 29.87° C 29.36° C 30.17° C
September 22 29.92° C 29.77° C 30.13° C
September 23 29.89° C 29.72° C 30.16° C
September 24 29.86° C 29.51° C 30.25° C
September 25 30.03° C 29.67° C 30.72° C
September 26 29.98° C 29.45° C 30.83° C
September 27 30.02° C 29.51° C 30.73° C
September 28 30° C 29.56° C 30.68° C
September 29 30.02° C 29.57° C 30.6° C
September 30 30.05° C 29.75° C 30.55° C

Where September Sits in the Year

September highlighted

25.0° C
27.0° C
29.0° C
31.0° C
33.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
28.35° C
27.9° C
27.96° C
28.36° C
28.91° C
29.58° C
29.84° C
29.96° C
29.97° C
29.68° C
29.53° C
28.89° C
10-year monthly history for Tanapag Harbor, Saipan Island, Marianas. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in September

Compare other Northern Mariana Islands water for the same month

Tanapag Harbor, Saipan Island, Marianas Location

15.2267, 145.7370

15.22670, 145.73700 View on OpenStreetMap →

Tanapag Harbor, Saipan Island, Marianas sits at 15.2267°N, 145.7370°E, on the coast of Saipan, Northern Mariana Islands. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Tanapag Harbor, Saipan Island, Marianas