Seine River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Seine River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Seine River today is 21.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUL 5 | 20.1°C | 20.0°C | |
| JUL 6 | 20.1°C | 20.0°C | |
| JUL 7 | 20.1°C | 20.0°C | |
| JUL 8 | 20.2°C | 20.0°C | |
| JUL 9 | 20.2°C | 20.0°C | |
| JUL 10 | 21.0°C | 20.0°C | |
| JUL 11 | 21.3°C | 20.0°C | |
| JUL 12 | 21.4°C | 20.0°C | |
| JUL 13 | 20.0°C | 21.3°C | |
| JUL 14 | 20.0°C | 21.3°C | |
| JUL 15 | 20.0°C | 21.2°C | |
| JUL 16 | 20.0°C | 21.1°C | |
| JUL 17 | 20.0°C | 21.1°C | |
| JUL 18 | 20.0°C | 21.0°C | |
| JUL 19 | 20.0°C | 20.9°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 6°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 5°C | 9°C | 11°C |
| April | 8°C | 11°C | 14°C |
| May | 9°C | 14°C | 19°C |
| June | 13°C | 18°C | 22°C |
| July | 16°C | 20°C | 25°C |
| August | 13°C | 18°C | 22°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 5°C | 8°C | 11°C |
| December | 3°C | 7°C | 9°C |
Seine River: Water Temperature by Location
🇫🇷 France > Normandy
- Courcelles-sur-Seine17.2°C
- Duclair16.8°C
- Giverny17.8°C
- Honfleur18.2°C
- La Bouille16.9°C
- Oissel17.0°C
- Orival16.8°C
- Petit-Couronne16.9°C
- Poses17.0°C
- Quillebeuf-sur-Seine16.9°C
- Rouen17.9°C
- Vernon18.7°C
🇫🇷 France > Bourgogne-Franche-Comté
- Aisey-sur-Seine19.0°C
- Châtillon-sur-Seine20.3°C
- Duesme19.2°C
- Saint-Marc-sur-Seine19.5°C
- Sainte-Colombe-sur-Seine19.3°C
🇫🇷 France > Grand Est
- Bar-sur-Seine19.2°C
- Buxeuil19.0°C
- Clérey19.4°C
- Conflans-sur-Seine20.0°C
- Courtenot18.8°C
- Courteron19.1°C
- La Motte-Tilly20.1°C
- Méry-sur-Seine19.8°C
- Mussy-sur-Seine19.0°C
- Nogent-sur-Seine19.6°C
- Payns19.8°C
- Pont-sur-Seine19.8°C
- Saint-Mesmin19.6°C
- Troyes20.4°C
🇫🇷 France > Île-de-France
- Ablon-sur-Seine19.9°C
- Alfortville19.9°C
- Argenteuil19.7°C
- Boulogne-Billancourt20.7°C
- Bray-sur-Seine19.7°C
- Carrières-sous-Poissy19.6°C
- Charenton-le-Pont19.8°C
- Choisy-le-Roi19.9°C
- Étiolles20.4°C
- Mantes-la-Jolie19.6°C
- Marolles-sur-Seine19.9°C
- Melun21.4°C
- Meulan-en-Yvelines19.1°C
- Moisson18.1°C
- Montereau-Fault-Yonne21.2°C
- Nanterre19.8°C
- Paris20.8°C
- Saint-Denis20.7°C
- Samoreau20.3°C
- Thomery19.9°C
- Villeneuve-Saint-Georges20.0°C
Seine River: Weather Forecast
July 13
July 14
July 15
July 16
Location & Local Information
Source:
• location Source-Seine
Mouth English Channel (French: la Manche)
• location Le Havre/Honfleur
• coordinates 49°26′02″N 0°12′24″E
• elevation 0 m (0 ft)
Length 777 km (483 mi)
Basin size 79,000 km2 (31,000 sq mi)
Discharge:
• location Le Havre
• average 560 m3/s (20,000 cu ft/s)
The Seine River, flowing through Paris and northern France, has varied water temperatures that shift with the seasons. In summer, the water temperature can reach around 20°C to 24°C (68°F to 75°F), while in winter, it may drop to about 5°C to 10°C (41°F to 50°F). These temperatures can make swimming in the Seine appealing during warm months, although water quality issues often restrict recreational swimming. In recent years, Paris has made efforts to improve the Seine’s cleanliness in preparation for the 2024 Olympics, aiming to make parts of the river safe for public swimming events.
Currently, public swimming in the Seine is restricted within the city, though some exceptions apply outside of Paris where the water quality is better. There are also designated swimming areas and river beaches nearby, allowing people to enjoy the scenic views of the Seine without direct immersion in the river within urban areas.