Where to Go for Great Weather
Costa Rica · Regional climate

Guanacastewhen to go

Regional slice of Costa Rica with its own temperature profile. Best months here: Jan · Dec · Feb.

Range
29–32 °C
Compare
+3.1°C vs. Costa Rica mean
Country
Costa Rica
TZ
America/Bogota
Region match
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12-month climate · Guanacaste

How the year moves in Guanacaste

Ten years of ERA5, aggregated over Guanacaste itself rather than over Costa Rica as a whole — the same series the month-by-month scores below are built from.

Temperature°C
Temperature · 12-month climatologyGuanacaste, Costa Rica. Average daytime high by month in °C. Lowest in November (28.7), highest in April (32.3). Monthly means: 29.7, 30.6, 31.7, 32.3, 31.1, 29.6, 29.7, 29.8, 29.7, 29.0, 28.7, 29.0.
View data table
MonthAverage daytime high (°C)
January29.7
February30.6
March31.7
April32.3
May31.1
June29.6
July29.7
August29.8
September29.7
October29.0
November28.7
December29.0
Rainfallmm
Rainfall · 12-month climatologyGuanacaste, Costa Rica. Rainfall by month in mm. Lowest in February (10), highest in October (396). Monthly means: 22, 10, 13, 51, 259, 350, 192, 252, 301, 396, 217, 57.
View data table
MonthRainfall (mm)
January22
February10
March13
April51
May259
June350
July192
August252
September301
October396
November217
December57
Sunshinehr / day
Sunshine · 12-month climatologyGuanacaste, Costa Rica. Sunshine hours by month in hr / day. Lowest in June (4.2), highest in March (9.0). Monthly means: 8.1, 9.0, 9.0, 8.0, 5.4, 4.2, 4.8, 4.8, 4.7, 4.2, 5.0, 7.1.
View data table
MonthSunshine hours (hr / day)
January8.1
February9.0
March9.0
April8.0
May5.4
June4.2
July4.8
August4.8
September4.7
October4.2
November5.0
December7.1
What’s open · year round

Things to do in Guanacaste

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

Month by month · Guanacaste

Pick your window

Other regions · Costa Rica

Nearby and comparable

Safety · 6 governments

What the governments say about Costa Rica

Combined advisory · most-cautious-wins
Exercise increased caution
Highest level across 6 governments · Advisory last changed
See breakdown by country
AU

Exercise increased caution

Changed Checked www.smartraveller.gov.au
CA

Exercise increased caution

Changed Checked travel.gc.ca
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
UK

Exercise normal precautions

Changed Checked www.gov.uk
US

Exercise increased caution

Changed Checked travel.state.gov
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