Sea Temperature in San Francisco in April

Complete information on the sea temperature range in the Pacific Ocean in San Francisco in April. Historical daily data. Climate details for April. Tips on swimming conditions and beach relaxation in San Francisco. 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 San Francisco in April

9°C

MINIMUN

12°C

AVERAGE

15°C

MAXIMUM

Historical Data of Water Temperature in April in San Francisco

Water Temperature Chart for Pacific Ocean in San Francisco in April

Sea Temperature Table in San Francisco in April Over the Past Years

Day	2024	2023	2022	Average
Apr 1	13°C	14°C	12°C	12.8°C
Apr 2	14°C	14°C	11°C	12.8°C
Apr 3	14°C	13°C	12°C	13.0°C
Apr 4	13°C	13°C	9°C	12.3°C
Apr 5	13°C	13°C	13°C	13.0°C
Apr 6	13°C	13°C	10°C	12.3°C
Apr 7	13°C	13°C	9°C	12.0°C
Apr 8	13°C	13°C	10°C	12.0°C
Apr 9	13°C	13°C	9°C	11.8°C
Apr 10	13°C	13°C	11°C	12.3°C
Apr 11	14°C	13°C	9°C	12.0°C
Apr 12	13°C	14°C	11°C	12.5°C
Apr 13	13°C	14°C	10°C	12.3°C
Apr 14	14°C	14°C	9°C	12.5°C
Apr 15	13°C	14°C	11°C	12.5°C
Apr 16	14°C	14°C	10°C	12.5°C
Apr 17	14°C	14°C	9°C	12.3°C
Apr 18	14°C	14°C	12°C	13.3°C
Apr 19	14°C	14°C	12°C	13.0°C
Apr 20	14°C	14°C	11°C	13.0°C
Apr 21	13°C	15°C	12°C	13.3°C
Apr 22	14°C	14°C	11°C	13.0°C
Apr 23	13°C	14°C	10°C	12.3°C
Apr 24	14°C	14°C	9°C	12.5°C
Apr 25	14°C	14°C	9°C	12.5°C
Apr 26	14°C	14°C	10°C	12.8°C
Apr 27	14°C	13°C	11°C	12.5°C
Apr 28	14°C	14°C	13°C	13.5°C
Apr 29	14°C	13°C	10°C	12.3°C

San Francisco Climate and Swimming Opportunities in April

19°C

Average Day Air Temperature

10°C

Average Night Air Temperature

50 mm

Precipitation Amount per Month

6 days

Number of Rainy Days

13 hrs

Daylight
per Day

10 hrs

Sunshine
per Day

16 km/h

Average Wind Speed

70%

Average
humidity

San Francisco lies within the California in United States. The average daytime temperature in San Francisco in April is 66°F (19°C), while the nighttime average is 49°F (10°C). There are typically six rainy days during the month, with a total precipitation of 2.0 inches (50 mm). The daylight duration in April in San Francisco is 13 hours, with an average of 10 hours of sunshine per day. The average wind speed in April is 10 mph (16 km/h), and the humidity level is around 70%.

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

Sea Temperature in April in Nearby Cities

Frequently Asked Questions About Water Temperatures in April in San Francisco

What is the sea temperature in San Francisco in April?

The water temperature in the Pacific Ocean in San Francisco in April ranges from 52°F to 55°F (11°C to 13°C).

Is it possible to swim in the Pacific Ocean in San Francisco in April?

The average sea temperature in San Francisco in April is 55°F (13°C), and the air temperature is 66°F (19°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.