Alajuela Weather in October
What's the weather like in Alajuela (Alajuela) in October 2025?
The climate in Alajuela during October can be summarized as warm, humid and very wet.
October is in the fall / autumn in Alajuela and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a muggy 25°C (77°F), whilst at night 17°C (63°F) is normal.
| Daytime temperature | 25°C 77°F |
|---|---|
| Nightly temperature | 17.4°C 63.3°F |
| Average temperature | 21.2°C 70.2°F |
| Daily sunshine | 6.1 hrs |
| Avg rainfall | 489 mm 19.2 ins |
| Rainy days | 23 days |
| Sea temperature | 28.5°C 83.3°F |
| Humidity | 85% |
| Windspeed | 10.8kph 7 mph |
On average October is the 2nd wettest month of the year in Alajuela with around 489mm 19.2 inches of rain making it a very wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.1 hours of sunshine per day.
October temperatures in Alajuela
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Alajuela in October 2025.
Other monthly averages
Best places to visit in October
Alajuela weather stats
| Hottest month: | April | 26.4°C 79.5°F |
|---|---|---|
| Driest month: | February | 15mm 0.6ins |
| Sunniest month: | February | 7.7hrs |
| Coldest month: | January | 24.1°C 75.4°F |
| Wettest month: | September | 498mm 19.6ins |
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