Temperature
Pleasant by day, mild at night.
73°Ftypical September high
Typical range
September climate
September in Biarritz
France · Nouvelle-Aquitaine
Mild days and plenty of sun.
Good overall
Daytime high
73°F
Lows around 62°F
Rain
Several rainy days
Sun
10.5 h/day
Air feel
Comfortable
Sea temp
69°F
Cool water for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 11 wet days, the lowest monthly average.
37%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
10.5 hSeptember sunshine
Heat & humidity by month
ComfortableSeptember
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 72° and nights feel near 64°.
Very coldColdCoolComfortableWarmNight hours
Clear sky
Partly cloudy skies this month.
45%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
6 mphSeptember Light breeze
Sea temperature
69°FSeptember sea temp
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 73°F, easing to about 70°F in early evening.
Avg temp Typical range
Morning65°F
Rain23%
Cloud58%
Humid airLow
Sun intensityMinimal
Best windowMidday71°F
Rain22%
Cloud55%
Humid airLow
Sun intensityModerate
Late afternoon73°F
Rain17%
Cloud51%
Humid airModerate
Sun intensityModerate
Early evening70°F
Rain15%
Cloud50%
Humid airModerate
Sun intensityLow
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 54 | 45 | 5.3 | 14 | 6.3 | 79 | 55 |
| Feb | 55 | 45 | 4.2 | 13 | 7.6 | 77 | 54 |
| Mar | 59 | 48 | 4.0 | 13 | 9.3 | 75 | 54 |
| Apr | 62 | 51 | 3.9 | 14 | 10.4 | 76 | 56 |
| May | 66 | 56 | 3.7 | 14 | 11.6 | 79 | 59 |
| Jun | 72 | 62 | 3.1 | 11 | 12.0 | 80 | 65 |
| Jul | 74 | 65 | 2.4 | 11 | 12.3 | 80 | 69 |
| Aug | 76 | 65 | 2.6 | 11 | 11.7 | 80 | 71 |
| Sep | 73 | 62 | 3.3 | 11 | 10.5 | 79 | 69 |
| Oct | 69 | 58 | 4.3 | 12 | 8.5 | 78 | 65 |
| Nov | 59 | 51 | 7.0 | 16 | 6.7 | 79 | 60 |
| Dec | 55 | 46 | 5.3 | 14 | 6.0 | 79 | 57 |
Similar climates
Similar
Similar travel styleAlgheroItalySimilar travel styleBrightonUnited KingdomSimilar travel styleMonterosso al MareItalySimilar travel styleOlbiaItaly
Want a side-by-side climate view? Compare Biarritz with Alghero.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 11, 2026
Data & methodology