Sea Temperature in Hillion in September

Complete information on the sea temperature range in the Bay of Biscay in Hillion in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Hillion. 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 Hillion in September

16°C

MINIMUN

18°C

AVERAGE

20°C

MAXIMUM

Historical Data of Water Temperature in September in Hillion

Water Temperature Chart for Bay of Biscay in Hillion in September

Sea Temperature Table in Hillion in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	18°C	18°C	19°C	18.3°C
Sep 2	18°C	17°C	19°C	18.0°C
Sep 3	18°C	20°C	17°C	18.5°C
Sep 4	18°C	19°C	17°C	18.3°C
Sep 5	18°C	17°C	17°C	17.8°C
Sep 6	18°C	19°C	18°C	18.5°C
Sep 7	19°C	18°C	17°C	18.3°C
Sep 8	19°C	20°C	19°C	19.3°C
Sep 9	19°C	20°C	20°C	19.3°C
Sep 10	18°C	18°C	20°C	18.8°C
Sep 11	18°C	17°C	18°C	18.0°C
Sep 12	18°C	18°C	19°C	18.5°C
Sep 13	18°C	18°C	18°C	18.0°C
Sep 14	18°C	18°C	20°C	18.5°C
Sep 15	17°C	18°C	17°C	17.5°C
Sep 16	18°C	19°C	20°C	18.8°C
Sep 17	19°C	19°C	17°C	18.0°C
Sep 18	18°C	18°C	20°C	18.3°C
Sep 19	18°C	19°C	20°C	18.5°C
Sep 20	19°C	19°C	17°C	18.0°C
Sep 21	19°C	17°C	18°C	17.8°C
Sep 22	18°C	17°C	19°C	18.0°C
Sep 23	18°C	20°C	17°C	18.3°C
Sep 24	19°C	18°C	19°C	18.5°C
Sep 25	18°C	18°C	17°C	17.5°C
Sep 26	18°C	18°C	19°C	18.3°C
Sep 27	18°C	17°C	19°C	18.0°C
Sep 28	18°C	19°C	19°C	18.3°C
Sep 29	17°C	17°C	19°C	17.5°C

Hillion Climate and Swimming Opportunities in September

20°C

Average Day Air Temperature

13°C

Average Night Air Temperature

55 mm

Precipitation Amount per Month

10 days

Number of Rainy Days

12 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

19 km/h

Average Wind Speed

80%

Average
humidity

Hillion lies within the Brittany in France. The average daytime temperature in Hillion in September is 20°C (67°F), while the nighttime average is 13°C (55°F). There are typically 10 rainy days during the month, with a total precipitation of 55 mm (2.1 inches). The daylight duration in September in Hillion is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 19 km/h (12 mph), and the humidity level is around 80%.

The water temperature in Hillion in September ranges from 17°C to 19°C (63°F to 66°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 18°C (64°F) by mid-September and reaching 18°C (64°F) in the last ten days. Overall, the average sea temperature in Hillion for September is 18°C (64°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in September in Nearby Cities

Frequently Asked Questions About Water Temperatures in September in Hillion

What is the sea temperature in Hillion in September?

The water temperature in the Bay of Biscay in Hillion in September ranges from 17°C to 19°C (63°F to 66°F).

Is it possible to swim in the Bay of Biscay in Hillion in September?

The average sea temperature in Hillion in September is 18°C (64°F), and the air temperature is 20°C (67°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.