SeasonScore
Manuel Antonio, Costa Rica
Photo: WiDi · CC BY-SA 3.0

Costa Rica

Manuel Antonio in September

🌧️ Rainy season

Warm, humid and very wet. Watch for flood risk.

🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics · waterproof sandals

Best months: Feb (8.9), Jan (8.8), Mar (8.6)

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Why September scores 7.1What goes into the score

How it works
🌡️ 29° / 26°C🌧️ 412 mm💧 dew pt 24°🍃 PM2.5 3
  • Weather comfort5.2
    • ✓Warm (28.8°C highs / 26.1°C lows)
    • !Very humid/sticky (dew point 24°C)
    • !Wet: ~412 mm rain, ~15 heavy-rain days
  • Air quality10.0
    • ✓Good (within WHO guideline) (PM2.5 ~3 µg/m³)
  • Seasonal hazards8.5
    • !Flood: ~15 heavy-rain days (≥10 mm) in an average September
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut September side by side with another month
SepFeb
Score7.1 Good8.9 Excellent
Season🌧️ Rainy season☀️ Dry season
High / low29° / 26°31° / 26°
Rain412 mm25 mm
Humiditydew pt 24°dew pt 21°
PM2.53 µg/m³6 µg/m³

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

Holidays & crowdsSeptember 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: Independence Day (15 Sep)

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

Explore Manuel AntonioEvents, sights, food & souvenirs

Check event dates locally

A small national park on Costa Rica's Pacific coast near Quepos, visited for rainforest trails that lead to beaches and wildlife such as sloths and monkeys.

Events in September
Costa Rica Independence DayEvery year15 September every year

Children carry homemade lanterns on the evening of 14 September and school bands parade on the 15th.

Why go: It is a public holiday and the area is busy with domestic visitors.

Where: Quepos and nationwide

Plan this tripTickets, data and transfers for Manuel Antonio

Airport transfer Kiwitaxi

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