Current sea water temperature:
+62.1°F
| Minimum sea water temperature in October: | 68.5°F |
| Maximum sea water temperature in October: | 55.9°F |
| Average sea water temperature in October: | 61.7°F |
| more information | |
14 days
forecast
forecast
| Nantucket |
monthly
weather
weather
| Nantucket |
Sea water temperature for the last 10 days:
| October 4 | 62.1°F | September 29 | 62.2°F |
| October 3 | 58.8°F | September 28 | 63.1°F |
| October 2 | 55.9°F | September 27 | 62.6°F |
| October 1 | 56.1°F | September 26 | 63.1°F |
| September 30 | 59.0°F | September 25 | 63.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Nantucket?
Based on the data about daily sea water temperature for the last three years the warmest sea in Nantucket was noticed in August, July and September.
Monthly Sea Temperatures in Nantucket, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 71.5°F. The highest and lowest sea temperatures during the month were 73.8°F and 67.6°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 69.5°F. The highest and lowest sea temperatures during the month were 71.8°F and 66.7°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.8°F. The highest and lowest sea temperatures during the month were 72.3°F and 59.0°F.
current
weather
weather
| Nantucket |
weather in
October
October
| Nantucket |
Best time for vacation in Nantucket
Nantucket on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Nantucket
Local time: 21:54
October 05, monday
0000
61°F
SW
19 mph
19 mph
0300
61°F
S
19 mph
19 mph
0600
61°F
S
16 mph
16 mph
0900
59°F
E
14 mph
14 mph
1200
61°F
E
21 mph
21 mph
1500
63°F
E
22 mph
22 mph
1800
64°F
SE
25 mph
25 mph
2100
61°F
SE
29 mph
29 mph
