Erts Weather in September
September in Erts brings moderate temperatures, with daytime highs of 18°C (64°F) and nights around 6°C (43°F). Quite a bit of rainfall is expected, around 80 mm (3.1 in), so pack an umbrella.
Rainfall in Erts in September
You can expect rain on around 11 days based on historical patterns, with 80 mm (3.1 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Erts in September
September in Erts brings moderate temperatures, with highs of 18°C (64°F) and nights around 6°C (43°F). Conditions are often most pleasant around the middle of the day. 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.Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Andorra, check out our Erts's climate page.
Erts Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
18°C (64°F)
Chance of Rain
38%
Precipitation
80 mm (3.1 in)
Rainy days
11 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Erts 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 for Erts in September
Browse day-by-day weather records for Erts spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Erts historical weather extremes in September
Our historical data for Erts spans 1976 to 2025, revealing these weather extremes.
- On September 16, 1987, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- Erts experienced its chilliest September day on September 23, 2025, reaching only 8°C (46°F).
- The coldest night in September in Erts was on September 14, 2024, with a minimum of -3°C (27°F).
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
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tolerable
unpleasant
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What to Wear in Erts in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in Erts in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Andorra, check out our Erts's climate page.
See the full Erts climate overview or explore weather in Andorra.
