Hernani in September
The weather in September
In September, Hernani averages daytime highs of 23° and night-time lows of 15° — mild weather by day. Expect around 124 mm of precipitation spread over about 10 wet days, with average cloud cover near 34%.
Days are 2° cooler than in August on average, and October is cooler again by about 2.6°. The sea averages 21°, pleasant for a swim.
September scores 74/100 — good conditions for sightseeing — and ranks 3rd of the twelve months for Hernani.
Around the middle of the month the sun rises at 07:48 and sets at 20:20 local time, giving 12 h 32 min of daylight. Days shorten by 84 minutes over the month.
Why 74/100?
How the score for September is builtBeach score this month: 65/100 (adds sea temperature and heat).
Comfort peaks for daytime highs between 18° and 25°C (64–77°F).
Festivals in the region in September
- San Sebastián International Film FestivalFilm festivalSan Sebastián
- Romería de OlarizuReligious festivalAretxabaleta
- Zarauzko euskal jaiakZarautz
Only the month is given: the exact dates change from year to year.
Around Hernani this month
Spain's best in September
San Cristóbal de La Laguna
Las Palmas de Gran Canaria
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Hernani in September: quick answers
Is September a good time to visit Hernani?
September scores 74/100 for Hernani, which we rate as good. Average highs are 23°C with 10 wet days.
How warm is Hernani in September?
Daytime highs average 23°C and night-time lows 15°C in September.
Does it rain a lot in Hernani in September?
Hernani receives about 124 mm of precipitation in September, falling on around 10 days.
Can you swim in Hernani in September?
The sea averages 21°C in September, refreshing but swimmable.