Charlestown Weather: August
 |
Average Day Temperature: | 78.4°F |
|
Average Night Temperature: | 70.1°F |
|
Sea Water Temperature: | 73.2°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 13.2 - 14.4 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.0 in | |
| detailed information | ||
forecast
| Charlestown |
Temperature
| Charlestown |
Air Temperature in August, °F
The highest day temperature in August 2025 was 82°F. The lowest night temperature was 63°F. The average values for day and night temperatures during August were 73.6°F и 68.7°F respectivly.
Charlestown Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Charlestown was 71.8°F. The maximum and minimum values were 69.8°F and 74.4°F respectively.
You can expect various weather conditions during August. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Charlestown is 1.0 in. It makes august one of the least rainy months of the year.
The average wind speed in August is 9.2 mph. It makes August one of the most windless months of the year for Charlestown.
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 Charlestown in August is 8.0 hours.
Charlestown on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0600 |  |
16°F | S 9 mph |
| 0900 |  |
20°F | S 4 mph |
| 1200 | |
26°F | N 5 mph |
| 1500 |  |
28°F | NE 9 mph |
| 1800 |  |
30°F | NE 6 mph |
| 2100 | |
34°F | NE 5 mph |
| 0000 | |
36°F | NE 4 mph |
| 0300 | |
38°F | NE 2 mph |