Sea Temperature in Half Moon Bay in January

Complete information on the sea temperature range in the Pacific Ocean in Half Moon Bay in January. Historical daily data. Climate details for January. Tips on swimming conditions and beach relaxation in Half Moon Bay. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Half Moon Bay in January

9°C

MINIMUN

12°C

AVERAGE

15°C

MAXIMUM

Historical Data of Water Temperature in January in Half Moon Bay

Water Temperature Chart for Pacific Ocean in Half Moon Bay in January

Sea Temperature Table in Half Moon Bay in January Over the Past Years

Day	2024	2023	2022	Average
Jan 1	13°C	13°C	13°C	12.8°C
Jan 2	13°C	13°C	13°C	12.5°C
Jan 3	13°C	13°C	13°C	12.5°C
Jan 4	13°C	13°C	13°C	12.5°C
Jan 5	13°C	13°C	13°C	12.5°C
Jan 6	13°C	13°C	13°C	12.5°C
Jan 7	13°C	12°C	12°C	12.0°C
Jan 8	13°C	12°C	12°C	12.0°C
Jan 9	13°C	12°C	12°C	12.0°C
Jan 10	13°C	12°C	12°C	12.0°C
Jan 11	12°C	12°C	12°C	11.8°C
Jan 12	13°C	12°C	12°C	12.3°C
Jan 13	13°C	11°C	11°C	11.5°C
Jan 14	13°C	11°C	11°C	11.5°C
Jan 15	13°C	11°C	11°C	11.5°C
Jan 16	13°C	11°C	11°C	11.5°C
Jan 17	13°C	11°C	11°C	11.5°C
Jan 18	13°C	11°C	11°C	11.8°C
Jan 19	13°C	10°C	10°C	11.3°C
Jan 20	13°C	10°C	10°C	11.0°C
Jan 21	13°C	10°C	10°C	11.0°C
Jan 22	13°C	10°C	10°C	11.0°C
Jan 23	13°C	10°C	10°C	11.0°C
Jan 24	13°C	10°C	10°C	11.0°C
Jan 25	12°C	9°C	9°C	10.3°C
Jan 26	11°C	9°C	9°C	10.0°C
Jan 27	11°C	9°C	9°C	10.0°C
Jan 28	11°C	9°C	9°C	10.0°C
Jan 29	11°C	9°C	9°C	10.0°C
Jan 30	11°C	9°C	9°C	10.0°C

Half Moon Bay Climate and Swimming Opportunities in January

16°C

Average Day Air Temperature

7°C

Average Night Air Temperature

144 mm

Precipitation Amount per Month

9 days

Number of Rainy Days

10 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

12 km/h

Average Wind Speed

79%

Average
humidity

Half Moon Bay lies within the California in United States. The average daytime temperature in Half Moon Bay in January is 61°F (16°C), while the nighttime average is 44°F (7°C). There are typically nine rainy days during the month, with a total precipitation of 5.7 inches (144 mm). The daylight duration in January in Half Moon Bay is 10 hours, with an average of 6 hours of sunshine per day. The average wind speed in January is 7 mph (12 km/h), and the humidity level is around 79%.

The water temperature in Half Moon Bay in January ranges from 50°F to 55°F (10°C to 13°C). At the beginning of the month, the average temperature is around 54°F (12°C), shifting to 54°F (12°C) by mid-January and reaching 52°F (11°C) in the last ten days. Overall, the average sea temperature in Half Moon Bay for January is 52°F (11°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in January in Nearby Cities

Frequently Asked Questions About Water Temperatures in January in Half Moon Bay

What is the sea temperature in Half Moon Bay in January?

The water temperature in the Pacific Ocean in Half Moon Bay in January ranges from 50°F to 55°F (10°C to 13°C).

Is it possible to swim in the Pacific Ocean in Half Moon Bay in January?

The average sea temperature in Half Moon Bay in January is 52°F (11°C), and the air temperature is 61°F (16°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.