Sea Temperature in Jamestown in September

Complete information on the sea temperature range in the Atlantic Ocean in Jamestown in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Jamestown. 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 Jamestown in September

18°C

MINIMUN

22.5°C

AVERAGE

27°C

MAXIMUM

Historical Data of Water Temperature in September in Jamestown

Water Temperature Chart for Atlantic Ocean in Jamestown in September

Sea Temperature Table in Jamestown in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	20°C	20°C	27°C	21.5°C
Sep 2	20°C	20°C	25°C	21.0°C
Sep 3	22°C	20°C	27°C	22.0°C
Sep 4	21°C	20°C	25°C	21.3°C
Sep 5	22°C	20°C	25°C	21.8°C
Sep 6	21°C	20°C	27°C	21.8°C
Sep 7	21°C	20°C	25°C	21.5°C
Sep 8	20°C	20°C	25°C	21.0°C
Sep 9	20°C	20°C	26°C	21.5°C
Sep 10	21°C	20°C	25°C	21.3°C
Sep 11	20°C	20°C	25°C	21.3°C
Sep 12	20°C	20°C	26°C	21.3°C
Sep 13	20°C	20°C	25°C	21.3°C
Sep 14	20°C	20°C	26°C	21.3°C
Sep 15	21°C	20°C	27°C	21.8°C
Sep 16	20°C	20°C	26°C	21.3°C
Sep 17	21°C	20°C	26°C	21.5°C
Sep 18	21°C	20°C	25°C	21.3°C
Sep 19	22°C	20°C	26°C	21.8°C
Sep 20	22°C	20°C	27°C	22.0°C
Sep 21	21°C	20°C	26°C	21.8°C
Sep 22	21°C	20°C	25°C	21.3°C
Sep 23	21°C	20°C	25°C	21.3°C
Sep 24	21°C	20°C	26°C	21.5°C
Sep 25	21°C	20°C	27°C	21.8°C
Sep 26	21°C	20°C	27°C	21.8°C
Sep 27	20°C	20°C	26°C	21.3°C
Sep 28	21°C	20°C	25°C	21.3°C
Sep 29	21°C	20°C	25°C	21.3°C

Jamestown Climate and Swimming Opportunities in September

22°C

Average Day Air Temperature

11°C

Average Night Air Temperature

0 mm

Precipitation Amount per Month

1 days

Number of Rainy Days

12 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

16 km/h

Average Wind Speed

71%

Average
humidity

Jamestown lies within in Saint Helena. The average daytime temperature in Jamestown in September is 22°C (72°F), while the nighttime average is 11°C (52°F). There is typically only one rainy day during the month, with a total precipitation of 0 mm (0.0 inches). The daylight duration in September in Jamestown is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 16 km/h (10 mph), and the humidity level is around 71%.

The water temperature in Jamestown in September ranges from 21°C to 22°C (70°F to 72°F). At the beginning of the month, the average temperature is around 22°C (72°F), shifting to 21°C (70°F) by mid-September and reaching 22°C (72°F) in the last ten days. Overall, the average sea temperature in Jamestown for September is 22°C (72°F). Optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.

Frequently Asked Questions About Water Temperatures in September in Jamestown

What is the sea temperature in Jamestown in September?

The water temperature in the Atlantic Ocean in Jamestown in September ranges from 21°C to 22°C (70°F to 72°F).

Is it possible to swim in the Atlantic Ocean in Jamestown in September?

The average sea temperature in Jamestown in September is 22°C (72°F), and the air temperature is 22°C (72°F), so optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.