Coldest sea in Costa Rica in October

54 coastal locations in Costa Rica ranked by typical October sea temperature, coldest first. Region-wide average in October: 28.7°C.

Coldest in October

Cocos Island

27.4°C October mean in Costa Rica

Regional October average

28.7°C

across all 54 coastal locations in Costa Rica

Vs annual mean

-0.1°C

below the year-round regional average

What the Costa Rica sea feels like in October

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Costa Rica monthly average 28.1°C to 29.5°C

Warmest month May 29.5°C
Coldest month February 28.1°C
Annual mean 28.8°C
Months above 20°C 12 of 12

Where October fits in the year

October sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Costa Rica month rankings:

Costa Rica sea temperature map (live)

The map shows today's latest reading at every Costa Rica location. The list below is based on the typical October mean.

Zoom in to see individual locations. Click a pin for water temperatures. View list →

°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest Costa Rica locations in October

Sorted by typical October mean from a decade of daily readings, coldest first. Click any place for the full location page.

#	Location	Country	October mean
1	Cocos Island	Costa Rica	27.4°C
2	Mal Pais	Costa Rica	28.4°C
3	Montezuma	Costa Rica	28.4°C
4	Playa Santa Teresa	Costa Rica	28.4°C
5	Cano Island	Costa Rica	28.4°C
6	Golfito	Costa Rica	28.4°C
7	Manuel Antonio	Costa Rica	28.4°C
8	Puerto Quepos	Costa Rica	28.4°C
9	Quepos	Costa Rica	28.4°C
10	Nosara	Costa Rica	28.4°C
11	Samara	Costa Rica	28.4°C
12	Nandayure	Costa Rica	28.5°C
13	Playa Carrillo	Costa Rica	28.5°C
14	Punta Islita	Costa Rica	28.5°C
15	San Jose	Costa Rica	28.5°C
16	Chacarita	Costa Rica	28.5°C
17	Puntarenas	Costa Rica	28.5°C
18	Dominical	Costa Rica	28.5°C
19	Ojochal	Costa Rica	28.5°C
20	Pavones	Costa Rica	28.5°C
21	Uvita	Costa Rica	28.5°C
22	Jaco	Costa Rica	28.6°C
23	Los Pargos	Costa Rica	28.6°C
24	Marbella	Costa Rica	28.6°C
25	Playa Avellana	Costa Rica	28.6°C

Show 25 more ▸

26	Playa Azul	Costa Rica	28.6°C
27	Playa Mansita	Costa Rica	28.6°C
28	Playa Negra	Costa Rica	28.6°C
29	Guanacaste	Costa Rica	28.6°C
30	Liberia	Costa Rica	28.6°C
31	Brasilito	Costa Rica	28.7°C
32	Catalina Island	Costa Rica	28.7°C
33	Palm Beach Estates	Costa Rica	28.7°C
34	Playa Carbon	Costa Rica	28.7°C
35	Playa Conchal	Costa Rica	28.7°C
36	Playa Del Coco	Costa Rica	28.7°C
37	Playa Flamingo	Costa Rica	28.7°C
38	Playa Grande	Costa Rica	28.7°C
39	Playa Hermosa	Costa Rica	28.7°C
40	Playa Langosta	Costa Rica	28.7°C
41	Playa Mina	Costa Rica	28.7°C
42	Playa Nombre de Jesus	Costa Rica	28.7°C
43	Playa Real y Roble	Costa Rica	28.7°C
44	Playa Ventanas	Costa Rica	28.7°C
45	Potrero	Costa Rica	28.7°C
46	Tamarindo Beach	Costa Rica	28.7°C
47	Papagayo	Costa Rica	28.7°C
48	Tortuguero	Costa Rica	29.5°C
49	Limon	Costa Rica	29.5°C
50	Playa Bonita	Costa Rica	29.5°C

Warmest 10 in Costa Rica in October

Same data the other way. The warmest spots for the same month.

#	Location	Country	October mean
1	Puerto Limon Limón	Costa Rica	29.6°C
2	Punta Uva	Costa Rica	29.6°C
3	Cahuita	Costa Rica	29.6°C
4	Puerto Viejo	Costa Rica	29.6°C
5	Limon	Costa Rica	29.5°C
6	Playa Bonita	Costa Rica	29.5°C
7	Tortuguero	Costa Rica	29.5°C
8	Papagayo	Costa Rica	28.7°C
9	Brasilito	Costa Rica	28.7°C
10	Catalina Island	Costa Rica	28.7°C