SeasonMapJacó weather in January
Costa Rica
January in Jacó: sweltering, rainy, with clean air — fine if you can take 22 rainy days.
#3 of 12 months in Jacó · #325 of 1383 destinations to visit in January · comfort 85/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Jacó in January
No notes yet. Open Jacó on the map to add the first one.
Jacó climate normals — January
| Daytime high | 28°C / 83°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 76°F | |
| Feels like (high) | 34°C / 93°F | |
| Sea temperature | 29°C / 84°F | ♨️ bath-warm |
| Rainfall | 120 mm / 4.7 in | 🌧 rainy |
| Rainy days | 22 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 11.6 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Jacó in January
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsDry season, Christmas and New Year, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Jacó's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherJacó's weather peaks January–March, best around February.
Best weatherFair weatherToughest weather
What's on in Jacó in January
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Dry season
15 Dec – 15 Apr · usuallyCrowdedThe rivers drop, the hills behind the town go brown and dusty, and the place runs at capacity from Christmas through to Easter. Weekends are San Jose's as much as anyone's.
- Holiday
Christmas and New Year
18 Dec – 3 JanChristmas & New YearCrowdedBook earlyCosta Rican families take the whole fortnight at the beach and rates roughly double. The town is at its loudest between Christmas and the first week of January. Source ↗
Nearby, and something's on
Within 300 km of Jacó — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Jacó?
Jacó in January — FAQ
- Is January a good time to visit Jacó?
- January in Jacó: sweltering, rainy, with clean air — fine if you can take 22 rainy days. It ranks #3 of 12 months for Jacó on SeasonMap's comfort score (85/100).
- What is the weather like in Jacó in January?
- In January, Jacó averages a daily high of 28.4°C and a low of 24.4°C, with about 120.4 mm of rain over roughly 22.2 rainy days.
- What is the air quality in Jacó in January?
- Jacó has a mean US Air Quality Index of about 33 in January.
Other months in Jacó
Compare Jacó in January
Warmer or cooler than Jacó in January
Similar destinations in Central America — January
Within 300 km: Boquete's Feria de las Flores y del Cafe on 7–18 Jan, and Bocas del Toro's Surf season around 1 Dec – 31 Mar.