Costa Rica
Costa Rica in October: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Costa Rica in October is climatically well suited to beach holidays. The average daily high is around 29 °C, and the sea is about 28 °C. With about 25 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
55/100 · #7
Warmth
#12
Dryness
#11
Sun
#12
Sea warmth
#7
Published best categories: none
Costa Rica · OctoberPhoto: Shiva Shenoy from Flower Mound, United States · CC BY 2.0Climate facts
- Average high
- 29 °C
- Average low
- 24 °C
- Sea
- 28 °C
- Rainy days (est.)
- 25 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 86 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| September | 30 | 25 | 26 | 270 | 6.1 | 83 | 1.9 | 29 | 52 |
| October (selected) | 29 | 24 | 25 | 279 | 5.6 | 86 | 2.1 | 28 | 55 |
| November | 30 | 24 | 14 | 162 | 5.7 | 83 | 2.6 | 28 | 65 |
How do the previous and next months compare?
Baseline: October (55/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| September | -3 | +0.9 °C | +0.3 °C | +1.1 | -9.3 mm | +0.5 h | -2.6 % | -0.2 m/s | +0.5 °C |
| November | +10 | +0.6 °C | -0.6 °C | -11.6 | -117.4 mm | +0.1 h | -2.6 % | +0.5 m/s | -0.5 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Costa Rica in October?
The average daily high is around 29 °C, with an average daily low of about 24 °C.
Can you swim in Costa Rica in October?
The sea is about 28 °C (very warm).
Does it rain a lot in Costa Rica in October?
The curated estimate is about 25 rainy days per month, not a directly measured long-term average. Total precipitation averages around 279 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Costa Rica?
By the climate score, January, February, March and December are the strongest months for Costa Rica. For a beach trip: January, February, November and December. October is not among them.