Charlestown
Maryland, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Charlestown, MD

Ocean temperature

In January, the average ocean temperature in Charlestown, Maryland, is 42.4°F (5.8°C).
Note: Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Charlestown, the average length of the day in January is 9.8h.

What is the ocean temperature in January in Charlestown?

In Charlestown, in January, the average water temperature is 42.4°F (5.8°C). Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Charlestown have in January?

In January, the average length of the day in Charlestown is 9.8h.
Average sea temperature in January - Charlestown, MD
  • Average sea temperature in January: 42.4°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).

Average daylight in January - Charlestown, MD
  • Average daylight in January: 9.8h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.4h).