El Serrat Weather in September
El Serrat in September sees moderate temperatures, with highs around 18°C (64°F) and overnight lows of 6°C (43°F). Rainfall is fairly high at around 87 mm (3.4 in) on average, so pack waterproofs just in case.
Rainfall in El Serrat in September
This month experiences about 12 days of rain according to historical data, averaging 87 mm (3.4 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in El Serrat in September
September in El Serrat sees highs of 18°C (64°F) and lows of 6°C (43°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 6°C (43°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.If you prefer enjoying temperate temperatures and rain-free days, August typically offers the best 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 El Serrat's climate page.
El Serrat Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
18°C (64°F)
Chance of Rain
38%
Precipitation
87 mm (3.4 in)
Rainy days
12 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in El Serrat 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 El Serrat in September
Browse day-by-day weather records for El Serrat spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
El Serrat historical weather extremes in September
Based on weather observations in El Serrat between 1976 and 2025, these are the recorded extremes during September.
- The hottest September day on record in El Serrat reached 36°C (97°F) (September 16, 1987).
- El Serrat experienced its chilliest September day on September 23, 2025, reaching only 7°C (45°F).
- The lowest overnight temperature recorded in September was -3°C (27°F) (September 14, 2024).
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 El Serrat in September
For El Serrat in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in El Serrat 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 El Serrat's climate page.
See the full El Serrat climate overview or explore weather in Andorra.
