La Unión in September
6.1out of 10
Possible, with caveats
Warm and comfortable: highs around 24°C. Very wet: about 21 rainy days.
24°CAvg high
14°CAvg low
21Rainy days (215 mm)
12:02 hDaylight
05:55Sunrise · 17:57 Sunset
Why this score
- Warm and comfortable: highs around 24°C
- Very wet: about 21 rainy days
- Rain varies a lot between years (±5.2 days)
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±5.2 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 23°C | 14°C | 161 mm | 22 | – | – | 6.1 |
| February | 23°C | 14°C | 192 mm | 23 | – | – | 6.1 |
| March | 23°C | 14°C | 307 mm | 27 | – | – | 6.1 |
| April | 23°C | 14°C | 354 mm | 26 | – | – | 6.1 |
| May | 24°C | 15°C | 311 mm | 25 | – | – | 6.1 |
| June | 24°C | 14°C | 131 mm | 17 | – | – | 6.6 |
| July | 25°C | 14°C | 85 mm | 12 | – | – | 7.5 |
| August | 25°C | 14°C | 111 mm | 13 | – | – | 7.2 |
| September | 24°C | 14°C | 215 mm | 21 | – | – | 6.1 |
| October | 23°C | 14°C | 367 mm | 28 | – | – | 6.1 |
| November | 23°C | 14°C | 402 mm | 29 | – | – | 6.1 |
| December | 23°C | 14°C | 244 mm | 25 | – | – | 6.1 |
Frequently asked questions
How hot is La Unión in September?
Daytime highs average 24°C and nights about 14°C.
When is the best time to visit La Unión?
The best months are July, August.