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Normandy, lying in the northwestern part of France, has a maritime-oceanic type of climate humid and rainy for most of the year, with a marked variability, very windy, especially along the coast, with heavy rains in every period of the year, with intermediate seasons mild but rainy and cool summers.
In Normandy the more humid and rainy months are those of autumn, while the warmest are obviously those of the summer ie. June, July and August. The average amount of annual rainfall that falls in the region of Normandy normally varies between 650 mm and 1,200 mm, with the highest values near the coast and lower inland.
Because of the proximity of the Atlantic Ocean, the temperatures of Normandy – considering the northern latitude of the region – remain mild. During the winter, the average minimum temperatures are generally above zero, while in summer the average maximum temperatures are slightly higher than 20 ° C. In winter there is a rolling average of 20 days, along the coast, and 60 days, in the interior of the region, with sub-zero temperatures.
The temperature of the sea in Normandy varies between 17 ° C during the months of August and September and 8 ° C in the months of February and March.
WHEN TO GO TO NORMANDY
The best months to visit the Normandy are those that go from May to September when the weather is pleasant and the temperatures are milder.
The climate of Rouen.
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THE CLIMATE OF NORMANDY: CLIMATE TABLES
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| ROUEN (151 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days (snowy days) |
| January | 1,1 | 6,4 | 76,3 | 13,0 (4,7) |
| February | 1,1 | 7,3 | 60,4 | 10,3 (4,2) |
| March | 3,2 | 10,8 | 67,1 | 11,9 (3,3) |
| April | 4,7 | 13,7 | 59,2 | 10,7 (1,8) |
| May | 8,1 | 17,3 | 74,3 | 11,8 (0,2) |
| June | 10,7 | 20,3 | 63,7 | 9,5 |
| July | 12,8 | 22,8 | 68,9 | 9,4 |
| August | 12,8 | 22,8 | 65,1 | 9,0 |
| September | 10,4 | 19,5 | 65,5 | 9,7 |
| October | 7,8 | 15,0 | 83,5 | 12,4 |
| November | 4,1 | 9,9 | 76,8 | 13,0 (1,7) |
| December | 1,7 | 6,6 | 90,9 | 13,0 (3,4) |
| YEAR | 6,6 | 14,4 | 851,7 | 133,0 (19,3) |
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| CAEN (64 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days (snowy days) |
| January | 2,6 | 8,0 | 66,1 | 12,0 (3,4) |
| February | 2,4 | 8,6 | 52,4 | 10,7 (3,8) |
| March | 4,2 | 11,5 | 55,6 | 10,8 (2,3) |
| April | 5,3 | 13,6 | 50,4 | 10,3 (0,9) |
| May | 8,5 | 17,1 | 62,6 | 10,2 (0,1) |
| June | 11,0 | 20,1 | 57,9 | 8,2 |
| July | 13,1 | 22,6 | 52,6 | 8,0 |
| August | 13,2 | 22,8 | 51,2 | 7,6 |
| September | 11,1 | 20,1 | 60,8 | 9,5 |
| October | 8,7 | 16,1 | 77,6 | 12,1 |
| November | 5,3 | 11,5 | 74,6 | 12,7 (0,9) |
| December | 3,0 | 8,3 | 78,1 | 13,6 (2,2) |
| YEAR | 7,4 | 15,1 | 739,9 | 125,7 (13,6) |
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