Alajuela weather in September 2025

The temperatures in Alajuela in September are comfortable with low of 19°C and and high up to 26°C.

With more than 22 rainy days, Alajuela is an incredibly wet during September. Be sure to pack your umbrella and bring along your rubber boots to stay dry. It’s going to be raining cats and dogs this month!

Our weather forecast can give you a great sense of what weather to expect in Alajuela in September 2025.

If you’re planning to visit Alajuela in the near future, we highly recommend that you review the 14 day weather forecast for Alajuela before you arrive.

Temperatures

26° / 19°

Rainy Days

Snowy Days

Dry Days

Rainfall

708

Sun Hours

10.9

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 28° /20°	2 30° /20°	3 29° /21°	4 30° /21°	5 29° /22°	6 29° /20°
7 28° /20°	8 28° /21°	9 29° /22°	10 29° /22°	11 28° /22°	12 29° /22°	13 29° /21°
14 30° /20°	15 28° /21°	16 28° /22°	17 29° /23°	18 28° /21°	19 28° /22°	20 27° /22°
21 28° /21°	22 28° /20°	23 29° /19°	24 30° /21°	25 28° /21°	26 29° /21°	27 28° /22°
28 29° /21°	29 29° /22°	30 29° /22°

Explore the weather in Alajuela in other months

Alajuela annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	28° / 17°	2	29	42 mm	Perfect	Alajuela in January
February	29° / 17°	2	26	41 mm	Good	Alajuela in February
March	30° / 18°	3	28	50 mm	Good	Alajuela in March
April	30° / 19°	12	18	186 mm	Ok	Alajuela in April
May	27° / 20°	23	8	640 mm	Good	Alajuela in May
June	26° / 20°	25	5	741 mm	Good	Alajuela in June
July	26° / 19°	23	8	585 mm	Good	Alajuela in July
August	26° / 19°	23	8	629 mm	Good	Alajuela in August
September	26° / 19°	28	2	708 mm	Awful	Alajuela in September
October	26° / 19°	27	4	819 mm	Awful	Alajuela in October
November	26° / 18°	19	11	368 mm	Good	Alajuela in November
December	27° / 17°	6	25	114 mm	Perfect	Alajuela in December

Temperatures in Alajuela in September

Rain in Alajuela in September

Weather in Alajuela in September - FAQ

What is the average temperature in Alajuela in September?

The average temperature in Alajuela in September is 19/26° C.

What is the chance of rain in Alajuela in September?

On average, there are 28 rainy days in Alajuela during September.

Weather wise, is September a good time to visit Alajuela?

The weather in Alajuela in September is awful.

Can it snow in Alajuela in September?

On average, there are 0 snowy days in Alajuela in September.

Cities in Alajuela

For a more accurate weather forecast please select a city

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