Nantucket Weather: July
 |
Average Day Temperature: | 73.9°F |
|
Average Night Temperature: | 71.5°F |
|
Sea Water Temperature: | 72.3°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 14.4 - 15.1 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.1 in | |
| detailed information | ||
forecast
| Nantucket |
Temperature
| Nantucket |
Air Temperature in July, °F
The highest day temperature in July 2026 was 94°F. The lowest night temperature was 63°F. The average values for day and night temperatures during July were 79.3°F и 69.6°F respectivly.
Nantucket Water Sea Temperature in July, °F
The average sea surface temperature in July 2026 for Nantucket was 71.7°F. The maximum and minimum values were 68.6°F and 74.2°F respectively.
You can expect various weather conditions during July. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in July, in
Precipitation total in July for Nantucket is 1.1 in.
The average wind speed in July is 13.2 mph. It makes July one of the most windless months of the year for Nantucket.
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 Nantucket in July is 8.4 hours.
Nantucket on the Weather Map
| Boston |  |
+94 |
| Chicago | |
+82 |
| Hawaii |  |
+82 |
| Houston | |
+106 |
| Las Vegas | |
+124 |
| Los Angeles | |
+92 |
| Maui | |
+78 |
| Miami | |
+92 |
| Myrtle Beach |  |
+84 |
| New York | |
+84 |
| San Diego | |
+80 |
| San Francisco | |
+62 |
| Santa Monica | |
+80 |
| Sarasota | |
+92 |
| Washington | |
+88 |
| 1800 |  |
82°F | NE 12 mph |
| 2100 |  |
74°F | NE 12 mph |
| 0000 |  |
74°F | NE 13 mph |
| 0300 | |
76°F | NE 13 mph |
| 0600 |  |
76°F | NE 12 mph |
| 0900 |  |
76°F | NE 13 mph |
| 1200 | |
76°F | NE 15 mph |
| 1500 | |
78°F | NE 16 mph |