This data the coastal Nyon water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Nyon today is 20.8°C. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Geneva near Nyon was recorded in 2022 and was 22.8°C, and the coldest was recorded in 2012 at 18.8°C. Water temperature in Nyon is expected to drop to 19.6°C in the next 10 days. September average water temperature in Nyon is 19.5°C, the minimum temperature is 16.4°C, and the maximum is 23.4°C.
The swimming season in Nyon lasts from June to September. During those months, Nyon water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Nyon in winter reaches 8.8°C, in spring 11°C, in summer the average temperature rises to 20.5°C, and in autumn it is 16°C.
5 September 2025 |
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today temp |
20.8°C |
4 September 2025 |
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yesterday temp |
20.7°C |
Data in a table show Nyon temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Nyon.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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13.8°C | 7.1°C | 6.7°C | 9.9°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
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16.1°C | 18.5°C | 17.6°C | 12.6°C |
You may also be interested in other sections of our site for Nyon: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly water temperature in Nyon. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Nyon on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 8.5°C | 6.5°C | 9.8°C | cold |
Water temperature in Nyon in January | ||||
February | 7.8°C | 6.4°C | 8.7°C | cold |
Water temperature in Nyon in February | ||||
March | 8.3°C | 6.5°C | 10.4°C | cold |
Water temperature in Nyon in March | ||||
April | 10.8°C | 7.7°C | 14.4°C | cold |
Water temperature in Nyon in April | ||||
May | 13.9°C | 10.6°C | 19.2°C | cold |
Water temperature in Nyon in May | ||||
June | 18.1°C | 12.6°C | 24.6°C | cold |
Water temperature in Nyon in June | ||||
July | 21.4°C | 17.3°C | 24.8°C | warm |
Water temperature in Nyon in July | ||||
August | 21.9°C | 18.8°C | 26.3°C | warm |
Water temperature in Nyon in August | ||||
September | 19.5°C | 16.4°C | 23.4°C | cold |
Water temperature in Nyon in September | ||||
October | 15.8°C | 13.4°C | 19.9°C | cold |
Water temperature in Nyon in October | ||||
November | 12.7°C | 10.7°C | 14.8°C | cold |
Water temperature in Nyon in November | ||||
December | 10.1°C | 7.9°C | 12.4°C | cold |
Water temperature in Nyon in December |