Weather in Gasteiz / Vitoria in September

Prime time. September is about as good as Gasteiz / Vitoria gets. Highs average 22.3 °C, lows 12.5 °C, and rain falls on 10 days — nothing in the month is working against you.

September ranks 4 of 12 in Gasteiz / Vitoria: past the worst of the year but short of July, which is the month to book if the dates are open.

Rain on 10 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest September day reached 35.4 °C and the coldest night fell to 4.9 °C, and the wettest single day dropped 44 mm — roughly 79% of the month's rain in one day.

September is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest September on record still delivered 98 mm against 27 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 56 mm average is a reasonable planning figure, not a promise.

Wind is light at 6.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 74%.

How September sits in the year

The month is on the way down: 2.5 °C cooler than August, with October dropping another 3.6 °C. The first week and the last are not the same trip.

Daylight in September

12.6 hours of daylight, losing 1.4 hours across the month. That is between Gasteiz / Vitoria's extremes of 15.3 and 9.1 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 22.7 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

September in Gasteiz / Vitoria versus nearby

If Gasteiz / Vitoria is one option among several, the nearby comparison is worth making. Bilbao is close enough to be a coin toss — within a degree on temperature, 1 day less rain. Zaragoza is close enough to be a coin toss — 6.4 °C warmer, 4 days less rain.

So: September is effectively as good as it gets here — 1 points behind July, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Gasteiz / Vitoria

See all twelve months in Gasteiz / Vitoria, or where else to go in September.