Spring (March–May): Average 73–74°F, warm and humid climate, rainfall gradually increases, with the most rainfall in May. Common activities: Visiting Costa Rican coffee plantations, exploring nature reserves. Recommended clothing: Light and breathable clothing, raincoat or umbrella.
Summer (June–August): Average 72–73°F, hot and humid climate, high rainfall, part of the rainy season. Common activities: Swimming in waterfalls and rivers, visiting local markets. Recommended clothing: Light and breathable clothing, raincoat or umbrella, sun hat.
Autumn (September–November): Average 71–72°F, humid climate, still high rainfall, with the most rainfall in September. Common activities: Wildlife watching, enjoying the rainforest scenery. Recommended clothing: Light and breathable clothing, raincoat or umbrella.
Winter (December–February): Average 73–73°F, warm and dry climate, least rainfall. Common activities: Visiting museums, churches and historical sites, enjoying relaxed outdoor activities. Recommended clothing: Light long-sleeved clothing, light jacket.
Alajuela Province climatological average
Annual average temperature: approx. 73.0°F / Annual rainfall: approx. 2278 mm / Summer humidity: 75%–85% / Rainiest month: September
Alajuela Province monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
73.2°F
4
February
73.2°F
10.5
March
74.3°F
47.3
April
74.3°F
129.3
May
73.8°F
330.3
June
72.1°F
363
July
73.4°F
194.7
August
73°F
209.7
September
72.3°F
368.7
October
71.8°F
338.3
November
71.4°F
256
December
73.4°F
26.8
Alajuela Province weather for the next seven days
10/10
Friday
Moderate rain
77.1°F/63.3°F
10/11
Saturday
Moderate rain
70.1°F/63.7°F
10/12
Sunday
Moderate rain
74.3°F/63°F
10/13
Monday
Moderate rain
71.4°F/62.9°F
10/14
Tuesday
Heavy rain
74°F/64.1°F
10/15
Wednesday
Moderate rain
70.3°F/63°F
10/16
Thursday
Patchy rain nearby
73.8°F/62.9°F
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