Measurements:
°C
°F
Siasconset
70°F
NE 15 mph
Feels like: 70°F
Precip: 1%
World Resorts USA Siasconset Weather May Weather in Siasconset

Siasconset Weather: May

Average Day Temperature: 55.0°F
Average Night Temperature: 53.1°F
Sea Water Temperature: 51.1°F
Number of Sunny Days: 10 days
Sunshine Hours: 14.0 - 14.9 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.0 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 75°F. The lowest night temperature was 46°F. The average values for day and night temperatures during May were 60.6°F и 53.5°F respectivly.

Siasconset Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Siasconset was 51.6°F. The maximum and minimum values were 45.6°F and 55.6°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Siasconset is 1.0 in. It makes may one of the least rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 16.0 mph.

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 Siasconset in May is 7.4 hours.

Best Time to Visit Siasconset
The most sunny months:
June 13 days
October 13 days
September 13 days
The most warm months:
August 73.3 °F
July 72.9 °F
September 69.0 °F
Warmest sea temperature:
August 70.7 °F
July 68.5 °F
September 67.9 °F
The most cold months:
February 34.6 °F
January 34.9 °F
March 39.7 °F
The most rainy months:
October 4 days
January 3 days
December 3 days
The most windy months:
January 19 mph
March 19 mph
December 19 mph

Siasconset on the Weather Map

USA Resorts:
NAME
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +92
Los Angeles +70
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +68
San Francisco +60
Sarasota +94
Tampa +90
24 Hours Weather Forecast
Siasconset
Local time: 12:52
04 jun, thursday
1500 70°F
NE
14 mph
1800 68°F
NE
16 mph
2100 62°F
NE
15 mph
05 jun, friday
0000 60°F
NE
17 mph
0300 62°F
NE
19 mph
0600 62°F
E
20 mph
0900 62°F
E
16 mph
1200 62°F
E
13 mph