How warm is Costa Rica's Caribbean coast in January?

Typical highs are about 81°F and the sea is about 83°F. That is warm enough for long swims without a wetsuit.

Is there sargassum in Costa Rica's Caribbean coast in January?

In a typical year seaweed is low in January. It is usually lightest in January and July and heaviest in September and October. Landings vary a lot by year, wind and currents; Veabird's weekly sargassum report and each beach's page have the current forecast.

Is January hurricane season in Costa Rica's Caribbean coast?

No. Storm risk is very low in January.

How crowded is Costa Rica's Caribbean coast in January?

Typically busy, around New Year holiday and MLK weekend. The quietest months are usually September and October.

Costa Rica's Caribbean coast in January

January is one of the best months to visit Costa Rica's Caribbean coast: a typical day grades B-, the 1st best of the 12 months. Expect highs near 81°F, water around 83°F and about a 85% chance of rain on a given day. Sargassum (seaweed) is usually low in January. Beaches are typically busy (New Year holiday and MLK weekend).

Typical dayB-1st of 12 months

Highs / water81°FSea 83°F

Rain chance85%on a given day

SeaweedLowtypical year

CrowdsBusyNew Year holiday

Storm riskVery lowoutside storm season

Costa Rica's Caribbean coast month by month

Typical grade and high for each month. Higher is better: A+ to F.

December: C+ · January: B- · February: B-. The best months are usually January, February and March, and the weakest are August and September.

Best beaches in Costa Rica's Caribbean coast in January

Resorts with the best typical January, and their grades for the next few days.

Beach	Typical Jan	Seaweed	This week
Hotel Palace	B	Very low	SatB+SunB-MonC+TueB-WedB-
Casa Grande Eco Lodge at Pacuare Reserve	B	Very low	SatB+SunC+MonC+TueC+WedC+
Hotel Playa Bonita	B	Very low	SatB+SunC+MonC+TueB-WedC+
Hotel Playa Westfalia	B	Very low	SatB+SunBMonC+TueC+WedC+
Goddess Garden Resort	B	Very low	SatB+SunBMonC+TueC+WedC+
Villas del Caribe Beach	B	Low	SatCSunC+MonCTueC-WedC
Le Caméléon Boutique Hotel	B-	Low	SatC-SunCMonC-TueD+WedC-
Almonds & Corals Lodge	B-	Low	SatC-SunCMonC-TueD+WedC-

Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.

Better beach options in January

Elsewhere in Central & South America, Panama's Pacific beaches (A-), Belize (B+) and Colombia's Caribbean coast (B+) usually grade higher in January. Further afield: Huatulco (A), Puerto Vallarta (A) and the Yucatán Gulf Coast (A). Every destination in January.

Questions

Is January a good time to visit Costa Rica's Caribbean coast?: January is one of the best months to visit Costa Rica's Caribbean coast: a typical day grades B-, the 1st best of the 12 months. Expect highs near 81°F, water around 83°F and about a 85% chance of rain on a given day. Sargassum (seaweed) is usually low in January. Beaches are typically busy (New Year holiday and MLK weekend).
How warm is Costa Rica's Caribbean coast in January?: Typical highs are about 81°F and the sea is about 83°F. That is warm enough for long swims without a wetsuit.
Is there sargassum in Costa Rica's Caribbean coast in January?: In a typical year seaweed is low in January. It is usually lightest in January and July and heaviest in September and October. Landings vary a lot by year, wind and currents; Veabird's weekly sargassum report and each beach's page have the current forecast.
Is January hurricane season in Costa Rica's Caribbean coast?: No. Storm risk is very low in January.
How crowded is Costa Rica's Caribbean coast in January?: Typically busy, around New Year holiday and MLK weekend. The quietest months are usually September and October.

Plan it

Typical-month numbers from Veabird's year-ahead outlook for the 41 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.