Basauri, Spain — Weather in September 2026

Climate Overview

Basauri, Spain in September has warm conditions, with highs averaging 23°C (73°F). Rain falls on about 13 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 24°C (75°F) at the start to 22°C (71°F) by month's end.

September sees fairly even rainfall, totalling about 85 mm across the month.

Expect around 9.9h of sunshine at the start of September, decreasing to 9.2h by the end.

The warmest days tend to fall around the 5th, averaging 24.9°C (77°F).

Compared to August, this month is about 2°C cooler with 3 more rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

23°C / 15°C

Feels Like

24°C / 15°C

Rain

13 days · 85 mm

Sunshine

9.6h / day

Humidity

80% — Very Humid

Wind

16 km/h

Wind Direction

NNW (338°)

Gusts

33 km/h

Daylight

12.5 h

Cloud Cover

60%

Clear Sky Days

2.5

UV Index

4.9 — Moderate

Dew Point

16°C — Comfortable

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 07:52

Daylight 12.5h

Sunset 20:24

What to Expect

Daytime temperatures around 23°C (73°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	12°C / 6°C	9°C / 2°C	16days (131 mm) Wet	5.7h Fair	81% Humid	1.9 Low	Poor	View Details
February	14°C / 6°C	11°C / 3°C	13days (99 mm) Wet	7.1h Good	80% Humid	2.8 Moderate	Fair	View Details
March	15°C / 7°C	13°C / 5°C	17days (99 mm) Wet	8.7h Good	77% Humid	4.3 Moderate	Fair	View Details
April	17°C / 9°C	15°C / 7°C	14days (84 mm) Wet	9.7h Good	78% Humid	5.5 High	Good	View Details
May	19°C / 11°C	19°C / 10°C	14days (80 mm) Wet	10.8h Excellent	81% Humid	6.4 High	Good	View Details
June best	22°C / 15°C	24°C / 15°C	13days (89 mm) Wet	10.7h Excellent	84% Humid	6.5 High	Excellent	View Details
July best	24°C / 17°C	26°C / 17°C	10days (46 mm) Wet	11.3h Excellent	82% Humid	6.8 High	Excellent	View Details
August best	25°C / 17°C	27°C / 18°C	10days (51 mm) Wet	11.1h Excellent	80% Humid	6.1 High	Excellent	View Details
September best	23°C / 15°C	24°C / 15°C	13days (85 mm) Wet	9.6h Good	80% Humid	4.9 Moderate	Excellent	View Details
October	21°C / 13°C	20°C / 12°C	11days (92 mm) Wet	7.7h Good	79% Humid	3.6 Moderate	Good	View Details
November	16°C / 9°C	14°C / 7°C	17days (152 mm) Wet	6.3h Fair	80% Humid	2.1 Moderate	Fair	View Details
December	14°C / 7°C	11°C / 4°C	15days (118 mm) Wet	5.8h Fair	82% Humid	1.7 Low	Poor	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Basauri?

September is typically excellent for visiting Basauri, with average highs of 23°C (73°F) and around 13 rainy days. Basauri, Spain in September has warm conditions, with highs averaging 23°C (73°F). Rain falls on about 13 days this mont

Does it rain a lot in Basauri in September?

Basauri typically sees around 13 rainy days in September with 85 mm (3.3 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Basauri in September?

Evenings in Basauri during September are mild at 15°C (59°F). A light cardigan is usually enough.

What should I pack for Basauri in September?

With highs of 23°C (73°F) and lows of 15°C (59°F) in September, we recommend: Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Basauri?

Yes, September offers some of the best weather conditions in Basauri with comfortable temperatures and lower chances of rain.

What is the UV index in Basauri in September?

The average UV index in Basauri during September is 5 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Basauri in September?

Basauri gets approximately 13 hours of daylight per day in September, with around 10 hours of sunshine.

Does it snow in Basauri in September?

Snow is uncommon in Basauri during September based on 10-year climate averages.

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