Sea weather in Playa Arenillas in Costa Rica All the beach weather in Playa Arenillas

All the essential weather information for enjoying the beach in Playa Arenillas in Costa Rica, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Playa Arenillas over the next 7 days?

Discover the best moment to go to the beach in Playa Arenillas in Costa Rica this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Playa Arenillas. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Sunday 14 December 202576°F to 83°Fdiscouraged
Monday 15 December 202577°F to 83°Fdiscouraged
Tuesday 16 December 202576°F to 83°Fdiscouraged
Wednesday 17 December 202576°F to 83°Frecommended
Thursday 18 December 202576°F to 81°Frecommended
Friday 19 December 202576°F to 83°Frecommended
Saturday 20 December 202576°F to 85°Frecommended

Sea Weather: Your daily and hourly sea weather in Playa Arenillas

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 05:52 and will set at 17:23 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 83°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 13.7mph km/h (with gusts up to 21.8mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (76°F)24°C (76°F)25°C (76°F)27°C (80°F)27°C (81°F)28°C (83°F)27°C (80°F)26°C (79°F)
Perceived temperature27°C (80°F)26°C (79°F)27°C (80°F)29°C (85°F)30°C (85°F)31°C (88°F)30°C (86°F)28°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%81%82%75%72%70%79%78%
Barometric pressure1011 hPa1009 hPa1011 hPa1012 hPa1010 hPa1008 hPa1010 hPa1012 hPa
Cloud cover12%20%23%10%27%84%70%19%
Heat index27°C (80°F)26°C (79°F)27°C (80°F)29°C (85°F)30°C (85°F)31°C (88°F)30°C (86°F)28°C (83°F)
Dew point21°C (69°F)21°C (69°F)21°C (70°F)22°C (72°F)22°C (71°F)22°C (72°F)23°C (73°F)22°C (71°F)
Wind
Speed12km/h (8mph)14km/h (9mph)13km/h (8mph)9km/h (5mph)8km/h (5mph)15km/h (9mph)19km/h (12mph)22km/h (13mph)
Gusts19km/h (12mph)22km/h (14mph)19km/h (12mph)11km/h (7mph)13km/h (8mph)24km/h (15mph)32km/h (20mph)35km/h (22mph)
Direction 78°
ENE
56°
ENE
54°
NE
52°
NE
355°
N
27°
NNE
47°
NE
57°
ENE
Wind chill25°C (76°F)24°C (76°F)25°C (76°F)27°C (80°F)27°C (81°F)28°C (83°F)27°C (80°F)26°C (79°F)
Waves
Height0.6m (2.1ft)0.6m (1.9ft)0.6m (1.9ft)0.6m (1.8ft)0.6m (1.8ft)0.6m (1.9ft)0.6m (2.0ft)0.7m (2.2ft)
Direction 250°
WSW
251°
WSW
252°
WSW
254°
WSW
245°
WSW
240°
WSW
242°
WSW
244°
WSW
Period6.7 sec.6.6 sec.6.6 sec.6.6 sec.6.7 sec.6.6 sec.6.5 sec.6.4 sec.
Significant height0.7m (2.3ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)0.8m (2.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 05:53 and will set at 17:24 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 83°F t and a low of 77°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 14.9mph km/h (with gusts up to 21.1mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)25°C (78°F)25°C (77°F)26°C (80°F)27°C (81°F)28°C (83°F)27°C (80°F)26°C (78°F)
Perceived temperature28°C (82°F)28°C (82°F)27°C (81°F)29°C (84°F)29°C (84°F)31°C (88°F)29°C (85°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%80%80%75%69%66%75%77%
Barometric pressure1011 hPa1010 hPa1011 hPa1013 hPa1011 hPa1009 hPa1010 hPa1012 hPa
Cloud cover16%31%28%43%21%42%26%5%
Heat index28°C (82°F)28°C (82°F)27°C (81°F)29°C (84°F)29°C (84°F)31°C (88°F)29°C (85°F)28°C (82°F)
Dew point22°C (71°F)22°C (71°F)22°C (71°F)22°C (71°F)21°C (69°F)21°C (71°F)22°C (72°F)21°C (70°F)
Wind
Speed21km/h (13mph)23km/h (14mph)23km/h (14mph)24km/h (15mph)21km/h (13mph)22km/h (14mph)21km/h (13mph)19km/h (12mph)
Gusts31km/h (19mph)34km/h (21mph)34km/h (21mph)31km/h (19mph)32km/h (20mph)33km/h (21mph)33km/h (20mph)30km/h (19mph)
Direction 56°
NE
46°
NE
49°
NE
50°
NE
41°
NE
47°
NE
51°
NE
57°
ENE
Wind chill26°C (78°F)25°C (78°F)25°C (77°F)26°C (80°F)27°C (81°F)28°C (83°F)27°C (80°F)26°C (78°F)
Waves
Height0.6m (2.1ft)0.8m (2.5ft)0.8m (2.8ft)0.7m (2.4ft)0.7m (2.2ft)0.7m (2.3ft)0.7m (2.4ft)0.7m (2.2ft)
Direction 246°
WSW
235°
SW
236°
SW
237°
WSW
238°
WSW
239°
WSW
240°
WSW
240°
WSW
Period6.4 sec.6.3 sec.6.3 sec.6.3 sec.6.3 sec.6.2 sec.6.1 sec.6.0 sec.
Significant height0.8m (2.6ft)1.2m (3.9ft)1.2m (3.9ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)1.0m (3.3ft)0.8m (2.6ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 05:53 and will set at 17:24 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 83°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 13.7mph km/h (with gusts up to 21.8mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (76°F)27°C (80°F)25°C (76°F)27°C (80°F)27°C (80°F)26°C (78°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (80°F)29°C (84°F)26°C (79°F)28°C (83°F)29°C (85°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%78%81%72%65%63%74%76%
Barometric pressure1011 hPa1010 hPa1011 hPa1013 hPa1010 hPa1008 hPa1009 hPa1012 hPa
Cloud cover15%13%20%11%9%14%20%25%
Heat index27°C (81°F)27°C (81°F)27°C (80°F)29°C (84°F)26°C (79°F)28°C (83°F)29°C (85°F)28°C (82°F)
Dew point21°C (70°F)21°C (70°F)21°C (70°F)21°C (70°F)18°C (64°F)19°C (67°F)22°C (71°F)21°C (70°F)
Wind
Speed17km/h (10mph)19km/h (12mph)16km/h (10mph)19km/h (12mph)16km/h (10mph)16km/h (10mph)22km/h (14mph)15km/h (9mph)
Gusts25km/h (15mph)28km/h (17mph)24km/h (15mph)24km/h (15mph)33km/h (21mph)33km/h (20mph)35km/h (22mph)23km/h (14mph)
Direction 55°
NE
50°
NE
56°
ENE
59°
ENE
37°
NE
43°
NE
53°
NE
76°
ENE
Wind chill25°C (77°F)25°C (77°F)25°C (76°F)27°C (80°F)25°C (76°F)27°C (80°F)27°C (80°F)26°C (78°F)
Waves
Height0.7m (2.3ft)0.8m (2.7ft)0.8m (2.6ft)0.7m (2.2ft)0.6m (2.0ft)0.6m (2.0ft)0.6m (1.9ft)0.5m (1.7ft)
Direction 233°
SW
234°
SW
235°
SW
237°
WSW
239°
WSW
239°
WSW
241°
WSW
229°
SW
Period6.0 sec.5.9 sec.5.9 sec.5.8 sec.5.8 sec.5.7 sec.5.7 sec.5.6 sec.
Significant height1.0m (3.3ft)1.2m (3.9ft)1.0m (3.3ft)0.8m (2.6ft)0.7m (2.3ft)0.8m (2.6ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 05:54 and will set at 17:24 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 83°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 6.8mph km/h (with gusts up to 10.6mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (76°F)24°C (76°F)26°C (79°F)27°C (80°F)28°C (82°F)27°C (80°F)26°C (79°F)
Perceived temperature27°C (81°F)26°C (80°F)26°C (79°F)28°C (82°F)28°C (83°F)30°C (86°F)29°C (84°F)28°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%80%80%73%67%68%75%78%
Barometric pressure1011 hPa1010 hPa1011 hPa1012 hPa1010 hPa1008 hPa1009 hPa1011 hPa
Cloud cover21%18%17%48%17%41%19%83%
Heat index27°C (81°F)26°C (80°F)26°C (79°F)28°C (82°F)28°C (83°F)30°C (86°F)29°C (84°F)28°C (83°F)
Dew point21°C (70°F)21°C (69°F)21°C (69°F)21°C (69°F)20°C (68°F)21°C (70°F)22°C (71°F)22°C (71°F)
Wind
Speed11km/h (7mph)8km/h (5mph)8km/h (5mph)9km/h (6mph)5km/h (3mph)10km/h (6mph)5km/h (3mph)5km/h (3mph)
Gusts17km/h (11mph)11km/h (7mph)11km/h (7mph)12km/h (7mph)8km/h (5mph)14km/h (9mph)9km/h (5mph)8km/h (5mph)
Direction 72°
ENE
83°
E
83°
E
81°
E
297°
WNW
319°
NW
227°
SW
147°
SSE
Wind chill25°C (77°F)25°C (76°F)24°C (76°F)26°C (79°F)27°C (80°F)28°C (82°F)27°C (80°F)26°C (79°F)
Waves
Height0.5m (1.7ft)0.5m (1.7ft)0.5m (1.7ft)0.5m (1.7ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)
Direction 232°
SW
237°
WSW
237°
WSW
238°
WSW
239°
WSW
240°
WSW
237°
WSW
236°
SW
Period12.7 sec.12.7 sec.12.6 sec.12.5 sec.14.5 sec.14.4 sec.13.9 sec.13.7 sec.
Significant height0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 05:54 and will set at 17:25 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 81°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 7.5mph km/h (with gusts up to 10.6mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (76°F)24°C (75°F)26°C (79°F)24°C (75°F)27°C (80°F)27°C (80°F)26°C (79°F)
Perceived temperature27°C (81°F)26°C (80°F)26°C (79°F)28°C (82°F)25°C (78°F)29°C (83°F)29°C (84°F)28°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%77%79%69%64%68%73%75%
Barometric pressure1010 hPa1009 hPa1010 hPa1012 hPa1010 hPa1008 hPa1009 hPa1011 hPa
Cloud cover16%19%20%16%15%52%70%23%
Heat index27°C (81°F)26°C (80°F)26°C (79°F)28°C (82°F)25°C (78°F)29°C (83°F)29°C (84°F)28°C (83°F)
Dew point21°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)16°C (62°F)20°C (68°F)21°C (71°F)21°C (71°F)
Wind
Speed10km/h (6mph)8km/h (5mph)10km/h (6mph)9km/h (6mph)3km/h (2mph)12km/h (7mph)9km/h (6mph)3km/h (2mph)
Gusts16km/h (10mph)13km/h (8mph)15km/h (9mph)12km/h (7mph)7km/h (4mph)17km/h (11mph)14km/h (9mph)4km/h (2mph)
Direction 78°
ENE
76°
ENE
87°
E
75°
ENE
283°
WNW
267°
W
234°
SW
173°
S
Wind chill25°C (77°F)25°C (76°F)24°C (75°F)26°C (79°F)24°C (75°F)27°C (80°F)27°C (80°F)26°C (79°F)
Waves
Height0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.5ft)0.5m (1.5ft)0.5m (1.5ft)0.5m (1.6ft)
Direction 236°
SW
236°
SW
236°
WSW
237°
WSW
238°
WSW
240°
WSW
234°
SW
234°
SW
Period13.7 sec.13.6 sec.13.5 sec.13.5 sec.13.4 sec.13.1 sec.12.8 sec.12.7 sec.
Significant height0.4m (1.3ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 05:55 and will set at 17:25 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 83°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 11.2mph km/h (with gusts up to 17.4mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)24°C (76°F)24°C (75°F)26°C (79°F)24°C (75°F)28°C (82°F)27°C (80°F)26°C (78°F)
Perceived temperature27°C (81°F)26°C (79°F)26°C (78°F)28°C (83°F)25°C (78°F)30°C (87°F)29°C (85°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%80%80%70%66%66%74%78%
Barometric pressure1011 hPa1010 hPa1011 hPa1013 hPa1010 hPa1008 hPa1009 hPa1011 hPa
Cloud cover11%7%7%5%3%45%19%12%
Heat index27°C (81°F)26°C (79°F)26°C (78°F)28°C (83°F)25°C (78°F)30°C (87°F)29°C (85°F)28°C (82°F)
Dew point21°C (70°F)21°C (69°F)20°C (68°F)20°C (69°F)17°C (63°F)21°C (70°F)22°C (71°F)21°C (71°F)
Wind
Speed4km/h (2mph)8km/h (5mph)10km/h (6mph)9km/h (6mph)4km/h (3mph)6km/h (4mph)15km/h (10mph)18km/h (11mph)
Gusts6km/h (4mph)13km/h (8mph)16km/h (10mph)12km/h (8mph)9km/h (6mph)9km/h (5mph)25km/h (15mph)28km/h (18mph)
Direction 99°
E
85°
E
66°
ENE
78°
ENE
331°
NNW
348°
NNW
58°
ENE
67°
ENE
Wind chill25°C (78°F)24°C (76°F)24°C (75°F)26°C (79°F)24°C (75°F)28°C (82°F)27°C (80°F)26°C (78°F)
Waves
Height0.5m (1.6ft)0.5m (1.6ft)0.5m (1.7ft)0.5m (1.8ft)0.5m (1.7ft)0.5m (1.7ft)0.6m (1.9ft)0.7m (2.2ft)
Direction 235°
SW
236°
SW
237°
WSW
238°
WSW
239°
WSW
240°
WSW
241°
WSW
235°
SW
Period12.7 sec.12.6 sec.12.6 sec.12.5 sec.12.5 sec.12.4 sec.12.3 sec.12.2 sec.
Significant height0.4m (1.3ft)0.5m (1.6ft)0.6m (2ft)0.6m (2ft)0.4m (1.3ft)0.4m (1.3ft)1.1m (3.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 05:55 and will set at 17:26 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 85°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 10.6mph km/h (with gusts up to 16.2mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (76°F)24°C (76°F)27°C (80°F)27°C (81°F)29°C (84°F)27°C (80°F)26°C (79°F)
Perceived temperature27°C (81°F)27°C (80°F)26°C (79°F)29°C (84°F)29°C (85°F)32°C (89°F)29°C (85°F)28°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%79%80%70%66%66%76%78%
Barometric pressure1011 hPa1009 hPa1011 hPa1013 hPa1011 hPa1008 hPa1009 hPa1011 hPa
Cloud cover15%11%8%9%25%71%76%13%
Heat index27°C (81°F)27°C (80°F)26°C (79°F)29°C (84°F)29°C (85°F)32°C (89°F)29°C (85°F)28°C (83°F)
Dew point21°C (70°F)21°C (69°F)21°C (69°F)21°C (69°F)21°C (69°F)22°C (71°F)22°C (72°F)22°C (71°F)
Wind
Speed17km/h (11mph)16km/h (10mph)13km/h (8mph)10km/h (6mph)5km/h (3mph)7km/h (4mph)3km/h (2mph)4km/h (3mph)
Gusts26km/h (16mph)25km/h (15mph)21km/h (13mph)14km/h (9mph)8km/h (5mph)11km/h (7mph)4km/h (3mph)7km/h (4mph)
Direction 57°
ENE
60°
ENE
67°
ENE
70°
ENE
358°
N
47°
NE
143°
SE
109°
ESE
Wind chill25°C (77°F)25°C (76°F)24°C (76°F)27°C (80°F)27°C (81°F)29°C (84°F)27°C (80°F)26°C (79°F)
Waves
Height0.6m (1.8ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.8ft)0.6m (1.9ft)
Direction 235°
SW
235°
SW
235°
SW
235°
SW
234°
SW
234°
SW
234°
SW
233°
SW
Period12.2 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.1 sec.12.0 sec.11.9 sec.
Significant height0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.8m (2.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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