Search for cities, countries, lakes and rivers
Sea Temperature in St Ives in September
Complete information on the sea temperature range in the Celtic Sea in St Ives in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in St Ives. 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 St Ives in September
59°F
MINIMUN
63°F
AVERAGE
66°F
MAXIMUM
Historical Data of Water Temperature in September in St Ives
Water Temperature Chart for Celtic Sea in St Ives in September
Sea Temperature Table in St Ives in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 63°C | 61°C | 63°C | 62°C |
| Sep 2 | 63°C | 61°C | 59°C | 61°C |
| Sep 3 | 63°C | 61°C | 64°C | 63°C |
| Sep 4 | 63°C | 61°C | 66°C | 63°C |
| Sep 5 | 61°C | 61°C | 61°C | 61°C |
| Sep 6 | 63°C | 61°C | 61°C | 61°C |
| Sep 7 | 63°C | 61°C | 66°C | 63°C |
| Sep 8 | 63°C | 61°C | 64°C | 62°C |
| Sep 9 | 63°C | 61°C | 66°C | 63°C |
| Sep 10 | 63°C | 61°C | 66°C | 63°C |
| Sep 11 | 63°C | 61°C | 66°C | 63°C |
| Sep 12 | 63°C | 61°C | 64°C | 62°C |
| Sep 13 | 63°C | 61°C | 61°C | 61°C |
| Sep 14 | 61°C | 63°C | 66°C | 63°C |
| Sep 15 | 61°C | 61°C | 64°C | 61°C |
| Sep 16 | 63°C | 63°C | 66°C | 63°C |
| Sep 17 | 63°C | 63°C | 59°C | 61°C |
| Sep 18 | 63°C | 63°C | 63°C | 62°C |
| Sep 19 | 63°C | 63°C | 64°C | 63°C |
| Sep 20 | 63°C | 61°C | 61°C | 61°C |
| Sep 21 | 63°C | 63°C | 61°C | 61°C |
| Sep 22 | 63°C | 61°C | 64°C | 62°C |
| Sep 23 | 63°C | 61°C | 59°C | 60°C |
| Sep 24 | 61°C | 61°C | 59°C | 60°C |
| Sep 25 | 63°C | 61°C | 61°C | 61°C |
| Sep 26 | 63°C | 61°C | 59°C | 61°C |
| Sep 27 | 61°C | 59°C | 64°C | 61°C |
| Sep 28 | 61°C | 61°C | 66°C | 62°C |
| Sep 29 | 61°C | 61°C | 66°C | 62°C |
St Ives Climate and Swimming Opportunities in September
68°F
Average Day Air Temperature
54°F
Average Night Air Temperature
3 in
Precipitation Amount per Month
10 days
Number of Rainy Days
12 hrs
Daylight
per Day
6 hrs
Sunshine
per Day
12 mph
Average Wind Speed
84%
Average
humidity
St Ives lies within the England in United Kingdom. The average daytime temperature in St Ives in September is 20°C (67°F), while the nighttime average is 12°C (54°F). There are typically 10 rainy days during the month, with a total precipitation of 76 mm (3.0 inches). The daylight duration in September in St Ives 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 84%.
The water temperature in St Ives in September ranges from 15°C to 17°C (59°F to 63°F). At the beginning of the month, the average temperature is around 17°C (63°F), shifting to 17°C (63°F) by mid-September and reaching 16°C (61°F) in the last ten days. Overall, the average sea temperature in St Ives for September is 17°C (63°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 St Ives
What is the sea temperature in St Ives in September?
The water temperature in the Celtic Sea in St Ives in September ranges from 15°C to 17°C (59°F to 63°F).
Is it possible to swim in the Celtic Sea in St Ives in September?
The average sea temperature in St Ives in September is 17°C (63°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.