SeasonScore
Costa Rica, Costa Rica
Photo: Henry Zbyszynski · CC BY 2.0

Costa Rica

Costa Rica in May

🌧️ Rainy season

Pleasant, a little humid and very wet. Watch for flood risk.

🎒 Pack: compact umbrella or rain jacket · waterproof sandals

Best months: Jan (9.6), Feb (9.5), Mar (9.4)

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Why May scores 7.7What goes into the score

How it works
🌡️ 25° / 18°C🌧️ 358 mm💧 dew pt 19°🍃 PM2.5 9
  • Weather comfort6.8
    • ✓Comfortable temperatures (25.3°C highs / 18.2°C lows)
    • !Humid (dew point 19.2°C)
    • !Wet: ~358 mm rain, ~11 heavy-rain days
  • Air quality9.3
    • ✓Good (within WHO guideline) (PM2.5 ~9 µg/m³)
  • Seasonal hazards8.5
    • !Flood: ~11 heavy-rain days (≥10 mm) in an average May
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut May side by side with another month
MayJan
Score7.7 Very good9.6 Excellent
Season🌧️ Rainy season☀️ Dry season
High / low25° / 18°24° / 16°
Rain358 mm37 mm
Humiditydew pt 19°dew pt 17°
PM2.59 µg/m³5 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).

Holidays & crowdsMay 2027

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

Other public holidays: International Labor Day (1 May)

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore Costa RicaEvents, sights, food & souvenirs

Check event dates locally

A Central American country known for rainforests, volcanoes, wildlife, two coastlines and eco-tourism.

Events in May

No major events on our calendar for May.

Coming up later

Green sea turtle nestingDate variesUsually July to October

Green turtles come ashore to lay eggs at night.

Why go: Night beach visits are only allowed with licensed guides.

Where: Tortuguero

Independence DayEvery year15 September every year, with lantern parades on the evening of the 14th

Children's lantern parades and marching bands celebrate independence.

Why go: Expect road closures in town centres.

Where: Nationwide

Fiestas de PalmaresDate variesUsually January

A large festival with concerts, bullfighting and a horse parade.

Why go: Very crowded and loud.

Where: Palmares, Alajuela

Plan this tripTickets, data and transfers for Costa Rica

Airport transfer Kiwitaxi

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