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Arinsal Weather in September
September in Arinsal typically sees daytime highs of 18°C (64°F) and nighttime lows of 6°C (43°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Arinsal in September
You can expect rain on roughly 12 days based on historical data, averaging 82 mm (3.2 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Arinsal in September
Expect highs of 18°C (64°F) in Arinsal in September, with nights dropping to around 6°C (43°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Arinsal.
Arinsal Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
18°C (64°F)
Chance of Rain
38%
Precipitation
82 mm (3.2 in)
Rainy days
12 days
Arinsal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arinsal - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arinsal typically stay consistent throughout September, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Arinsal in September
Browse day-by-day weather records for Arinsal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arinsal historical weather extremes in September
The extremes listed below come from historical weather data collected in Arinsal from 1976 through 2025.
- The hottest September day on record in Arinsal reached 36°C (97°F) (September 16, 1987).
- Arinsal experienced its chilliest September day on September 23, 2025, reaching only 7°C (45°F).
- Nighttime temperatures dropped to -3°C (27°F) on September 14, 2024, marking the coldest September night on record.
Best Places in Andorra in September
Find out more about the weather in Andorra and which places have the best travel conditions in this month. See all of Andorra in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Arinsal in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Arinsal in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Arinsal 3-Day Forecast
More climate data for Arinsal
See the full Arinsal climate overview or explore weather in Andorra.
Popular in September
Where to go in September - average daytime high across popular destinations.
Arinsal
18°C (64°F) Soldeu18°C (64°F) Ordino18°C (64°F) Canillo18°C (64°F) Encamp17°C (63°F) Andorra la Vella17°C (63°F) El Tarter18°C (64°F) Pas de la Casa17°C (63°F) Bucket list
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