Measurements:
°C
°F
Provincetown
80°F
NE 15 mph
Feels like: 82°F
Precip: 2%
World Resorts USA Provincetown Weather

Provincetown Sea Water Temperature

Current Sea Water Temperature:
+70.4°F
Maximum Sea Water Temperature in August: 77.4°F
Minimum Sea Water Temperature in August: 63.6°F
Average water temperature in August: 70.6°F

Sea Water Temperature for the Last 10 Days:

August 25 70.4°F August 20 72.0°F
August 24 68.4°F August 19 74.2°F
August 23 70.0°F August 18 72.2°F
August 22 70.6°F August 17 72.4°F
August 21 71.4°F August 16 74.0°F

When is the Warmest Sea for Provincetown?

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

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 Provincetown was 71.9°F. The maximum and minimum values were 67.2°F and 75.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Provincetown was 68.8°F. The maximum and minimum values were 65.2°F and 72.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Provincetown was 66.8°F. The maximum and minimum values were 63.0°F and 69.4°F respectively.

Best Time to Visit Provincetown
The most sunny months:
November 15 days
June 14 days
September 13 days
The most warm months:
July 77.3 °F
August 76.1 °F
September 70.7 °F
Warmest sea temperature:
August 70.6 °F
July 69.4 °F
September 67.0 °F
The most cold months:
January 34.0 °F
February 34.3 °F
December 39.8 °F
The most rainy months:
October 3 days
December 3 days
July 2 days
The most windy months:
December 15 mph
January 15 mph
February 14 mph

Provincetown on the Weather Map

USA Resorts:
NAME
Boston +80
Chicago +80
Hawaii +84
Houston +106
Las Vegas +116
Los Angeles +96
Maui +70
Miami +92
Myrtle Beach +84
New York +82
San Diego +96
San Francisco +64
Santa Monica +86
Sarasota +92
Washington +84
24 Hours Weather Forecast
Provincetown
Local time: 17:37
25 aug, tuesday
1800 80°F
NE
15 mph
2100 72°F
E
9 mph
26 aug, wednesday
0000 70°F
E
14 mph
0300 68°F
E
14 mph
0600 68°F
SE
12 mph
0900 68°F
SE
11 mph
1200 68°F
SE
3 mph
1500 72°F
NW
7 mph