Chelsea
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Chelsea, MA

Ocean temperature

In Chelsea, Massachusetts, in October, the average water temperature is 59.5°F (15.3°C).
Note: For swimming, a surface water temperature of 59.5°F (15.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In October, the average length of the day in Chelsea is 11h.

How cold is the water in October in Chelsea?

In Chelsea, Massachusetts, the average seawater temperature in October is 59.5°F (15.3°C). For swimming, a surface water temperature of 59.5°F (15.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the average length of the day in October in Chelsea?

The average length of the day in October in Chelsea is 11h.
Average sea temperature in October - Chelsea, MA
  • Average sea temperature in October: 59.4°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).

Average daylight in October - Chelsea, MA
  • Average daylight in October: 11h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).