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Guanacaste

Guanacaste 1
Travel Info
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Guanacaste Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Guanacaste year round climate

  • Spring (March–May): Average 81–82°F, warm and dry climate, rainfall gradually increases. March to April offers sunny and pleasant weather, with increased rainfall starting in May. Common activities: Surfing, sunbathing, visiting national parks. Recommended clothing: Light and breathable short-sleeved clothing, shorts, sun hat, sunglasses.
  • Summer (June–August): Average 78–79°F, hot and humid, abundant rainfall, the beginning of the rainy season. June has the most rainfall; be aware of heavy rain. Common activities: Rainforest exploration, waterfall viewing, indoor activities. Recommended clothing: Light and breathable clothing, raincoat or umbrella.
  • Autumn (September–November): Average 77–78°F, slightly lower temperatures, still relatively high rainfall, but less than in summer. Weather is partly sunny and partly rainy. Common activities: Birdwatching, hiking, farm visits. Recommended clothing: Light and breathable clothing, a light jacket is recommended.
  • Winter (December–February): Average 78–81°F, dry climate, very little rainfall, sunny and warm weather, peak tourist season. Common activities: Surfing, diving, sunbathing, wildlife watching. Recommended clothing: Light short-sleeved clothing, shorts, swimwear.

Guanacaste climatological average

Annual average temperature: approx. 79.9°F / Annual rainfall: approx. 1935 mm / Summer humidity: 70%–80% / Rainiest month: June

Guanacaste monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
80.6°F
0.2
February
81.5°F
1.5
March
82.9°F
35
April
82.9°F
22.7
May
81.7°F
175.7
June
78.1°F
416.3
July
79.5°F
212
August
79°F
184.7
September
78.3°F
256.7
October
77.7°F
235
November
77.2°F
377.7
December
79°F
17.7

Guanacaste weather for the next seven days

12/17
Wednesday
Patchy rain nearby
83.7°F/68.9°F
12/18
Thursday
Patchy rain nearby
83.3°F/69°F
12/19
Friday
Sunny
86.3°F/67.9°F
12/20
Saturday
Sunny
86.2°F/70.3°F
12/21
Sunday
Sunny
85°F/68.4°F
12/22
Monday
Sunny
83.7°F/68.6°F
12/23
Tuesday
Sunny
85.6°F/68.4°F