Saint-Nazaire/Montoir weather by month & the best time to visit
France · seaside town · oceanic / maritime climate
The best time to visit Saint-Nazaire/Montoir is September — its sunniest month (Sunshine Score 83/100), with June and July close behind. Saint-Nazaire/Montoir averages about 2,144 hours of sunshine a year. Daytime highs around 22°C / 72°F and roughly 43 mm of rain in September.
When is the best time to visit Saint-Nazaire/Montoir?
For sunshine, the best time to visit Saint-Nazaire/Montoir is September, then June and July. The dullest month is January (6/100, 77 mm of rain). The full month-by-month picture is in the table below.
How sunny is Saint-Nazaire/Montoir?
Saint-Nazaire/Montoir gets a moderate 2,144 hours of sunshine a year. 77 Sunshine Score points separate September (83) from January (6), so the month you pick matters. It ranks #28 of 53 destinations in France for annual sunshine, below the national median of 2,146 hours. The year's 740 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 6 | 9° / 48°F | 3° / 37°F | 77 mm | 1 | 9° / 48°F |
| February | 13 | 10° / 50°F | 2° / 36°F | 61 mm | 1 | 10° / 50°F |
| March | 33 | 13° / 55°F | 4° / 39°F | 62 mm | 2 | 11° / 52°F |
| April | 55 | 16° / 61°F | 6° / 43°F | 48 mm | 4 | 13° / 55°F |
| May | 74 | 19° / 66°F | 9° / 48°F | 59 mm | 5 | 17° / 63°F |
| June | 82 | 23° / 73°F | 12° / 54°F | 50 mm | 6 | 19° / 66°F |
| July | 82 | 25° / 77°F | 14° / 57°F | 48 mm | 6 | 20° / 68°F |
| August | 82 | 25° / 77°F | 14° / 57°F | 48 mm | 5 | 22° / 72°F |
| September | 83 | 22° / 72°F | 11° / 52°F | 43 mm | 4 | 19° / 66°F |
| October | 64 | 18° / 64°F | 9° / 48°F | 78 mm | 2 | 16° / 61°F |
| November | 32 | 13° / 55°F | 6° / 43°F | 81 mm | 1 | 13° / 55°F |
| December | 6 | 9° / 48°F | 3° / 37°F | 85 mm | 1 | 10° / 50°F |
Sea temperature in Saint-Nazaire/Montoir by month
The sea off Saint-Nazaire/Montoir is warmest in August at around 22°C / 72°F, and coolest in January at 9°C / 48°F. The water sits at a comfortable 21°C or warmer roughly 1 month a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Saint-Nazaire/Montoir: questions and answers
What kind of destination is Saint-Nazaire/Montoir?
Saint-Nazaire/Montoir is a seaside town in France with a oceanic / maritime climate — the sea reaches 22°C at its warmest and is swimmable (21°C+) about 1 months a year.
How many hours of sunshine does Saint-Nazaire/Montoir get a year?
Saint-Nazaire/Montoir gets about 2,144 hours of sunshine a year, at its best around September.
When is the best time to visit Saint-Nazaire/Montoir?
The sunniest time to visit Saint-Nazaire/Montoir is September, when the Sunshine Score peaks at 83/100 (with June and July close behind). Expect daytime highs around 22°C / 72°F.
What is the least sunny month in Saint-Nazaire/Montoir?
January is the least sunny month in Saint-Nazaire/Montoir, scoring 6/100 with about 77 mm of rain.
What is the sea temperature in Saint-Nazaire/Montoir?
The sea in Saint-Nazaire/Montoir ranges from about 9°C (January) to 22°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Saint-Nazaire/Montoir?
The typical midday UV index in Saint-Nazaire/Montoir peaks around 6 (high) in June, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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