World Resorts USA Siasconset Weather

Siasconset 14 Days Forecast

19.09
sat
Day
59°F
SW 19 mph
Precip.
15%
Night
59°F
W 12 mph
Precip.
6%
20.09
sun
Day
61°F
NW 11 mph
Precip.
17%
Night
61°F
W 16 mph
Precip.
75%
21.09
mon
Day
63°F
SW 28 mph
Precip.
41%
Night
63°F
SW 27 mph
Precip.
22%
22.09
tue
Day
57°F
SW 29 mph
Precip.
70%
Night
57°F
W 26 mph
Precip.
34%
23.09
wed
Day
61°F
SW 35 mph
Precip.
21%
Night
61°F
SW 35 mph
Precip.
25%
24.09
thu
Day
61°F
SW 37 mph
Precip.
78%
Night
61°F
SW 37 mph
Precip.
77%
25.09
fri
Day
61°F
S 28 mph
Precip.
33%
Night
63°F
S 19 mph
Precip.
11%
26.09
sat
Day
63°F
SW 20 mph
Precip.
6%
Night
61°F
W 22 mph
Precip.
6%
27.09
sun
Day
61°F
W 23 mph
Precip.
20%
Night
61°F
SW 23 mph
Precip.
13%
28.09
mon
Day
61°F
SW 29 mph
Precip.
26%
Night
61°F
SW 26 mph
Precip.
28%
29.09
tue
Day
63°F
SW 27 mph
Precip.
40%
Night
63°F
SW 25 mph
Precip.
24%
30.09
wed
Day
63°F
SW 25 mph
Precip.
13%
Night
61°F
SW 25 mph
Precip.
24%
01.10
thu
Day
59°F
SW 26 mph
Precip.
24%
Night
61°F
SW 24 mph
Precip.
24%
02.10
fri
Day
59°F
SW 20 mph
Precip.
22%
Night
59°F
SW 19 mph
Precip.
17%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 68.2°F. The highest and lowest sea temperatures during the month were 69.6°F and 66.4°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 59.7°F. The highest and lowest sea temperatures during the month were 66.6°F and 55.9°F.

Air temperature in Siasconset, °F

Precipitation total in Siasconset, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Siasconset

Sunniest months:
June 14 days
July 13 days
September 13 days
Warmest months:
August 71.7 °F
July 71.5 °F
September 67.1 °F
Warmest sea temp:
August 68.7 °F
July 66.8 °F
September 66.1 °F
Coldest months:
February 36.1 °F
January 36.4 °F
March 40.7 °F
Rainiest months:
October 4 days
January 3 days
December 3 days
Windiest months:
January 19.0 mph
March 19.0 mph
December 18.9 mph

Siasconset on a weather map

Current weather
06:59
Siasconset
+61°F
SW 22 mph
Feels like: +61°F
Precip.: 14%
Places in USA:
Name
°F
Boston
+55°F
Washington
+64°F
Hawaii
+79°F
Las Vegas
+77°F
Los Angeles
+70°F
Miami
+81°F
Maui
+63°F
New York
+63°F
Panama City Beach
+77°F
San Diego
+68°F
San Francisco
+59°F
Santa Monica
+68°F
Sarasota
+73°F
Houston
+79°F
Chicago
+63°F
all places
24 Hours Forecast
Siasconset
Local time: 06:59
September 19, saturday
0900
59°F
SW
21 mph
1200
59°F
SW
19 mph
1500
59°F
SW
14 mph
1800
59°F
SW
12 mph
2100
59°F
W
12 mph
September 20, sunday
0000
59°F
W
12 mph
0300
59°F
NW
11 mph
0600
59°F
NW
11 mph
Units of measurement: °C / °F