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
Friday 17 July 202681°F to 88°Fdiscouraged
Saturday 18 July 202681°F to 86°Fdiscouraged
Sunday 19 July 202677°F to 88°Fdiscouraged
Monday 20 July 202679°F to 85°Fdiscouraged
Tuesday 21 July 202679°F to 81°Fdiscouraged
Wednesday 22 July 202677°F to 83°Frecommended
Thursday 23 July 202677°F to 77°Frecommended

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

Sea weather on Friday 17 July 2026

On Friday 17 July 2026, the sun will rise at 05:29 and will set at 18:09 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 88°F t and a low of 81°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 15.5mph km/h (with gusts up to 24.2mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)27°C (80°F)29°C (84°F)30°C (87°F)31°C (88°F)29°C (84°F)28°C (82°F)
Perceived temperature30°C (86°F)30°C (86°F)30°C (86°F)32°C (90°F)34°C (94°F)36°C (96°F)33°C (91°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%78%78%70%63%62%72%75%
Barometric pressure1010 hPa1008 hPa1009 hPa1010 hPa1009 hPa1007 hPa1009 hPa1011 hPa
Cloud cover60%53%69%47%64%25%28%12%
Heat index30°C (86°F)30°C (86°F)30°C (86°F)32°C (90°F)34°C (94°F)36°C (96°F)33°C (91°F)31°C (87°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)22°C (72°F)23°C (73°F)23°C (74°F)23°C (73°F)
Wind
Speed19km/h (12mph)21km/h (13mph)22km/h (14mph)22km/h (13mph)17km/h (11mph)21km/h (13mph)25km/h (16mph)23km/h (15mph)
Gusts26km/h (16mph)29km/h (18mph)31km/h (19mph)29km/h (18mph)26km/h (16mph)33km/h (21mph)39km/h (25mph)34km/h (21mph)
Direction 62°
ENE
57°
ENE
55°
NE
58°
ENE
44°
NE
48°
NE
49°
NE
57°
ENE
Wind chill27°C (81°F)27°C (81°F)27°C (80°F)29°C (84°F)30°C (87°F)31°C (88°F)29°C (84°F)28°C (82°F)
Waves
Height0.7m (2.3ft)0.6m (2.1ft)0.7m (2.3ft)0.7m (2.2ft)0.6m (2.1ft)0.7m (2.4ft)0.9m (2.8ft)0.8m (2.7ft)
Direction 237°
WSW
230°
SW
231°
SW
231°
SW
232°
SW
232°
SW
232°
SW
225°
SW
Period12.1 sec.12.3 sec.12.5 sec.12.6 sec.12.6 sec.14.3 sec.14.0 sec.13.6 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.6m (2ft)0.6m (2ft)1.0m (3.3ft)1.1m (3.6ft)0.9m (3ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 05:29 and will set at 18:09 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 86°F t and a low of 81°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 19.9mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (80°F)27°C (80°F)29°C (83°F)29°C (85°F)30°C (86°F)29°C (83°F)27°C (81°F)
Perceived temperature30°C (86°F)30°C (85°F)29°C (85°F)32°C (89°F)33°C (91°F)34°C (92°F)32°C (90°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%78%78%69%65%65%73%75%
Barometric pressure1010 hPa1009 hPa1010 hPa1011 hPa1010 hPa1008 hPa1009 hPa1011 hPa
Cloud cover40%32%16%23%44%27%20%23%
Heat index30°C (86°F)30°C (85°F)29°C (85°F)32°C (89°F)33°C (91°F)34°C (92°F)32°C (90°F)30°C (86°F)
Dew point23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)22°C (72°F)23°C (73°F)23°C (74°F)22°C (72°F)
Wind
Speed22km/h (14mph)17km/h (11mph)17km/h (11mph)17km/h (11mph)9km/h (6mph)12km/h (7mph)17km/h (11mph)20km/h (12mph)
Gusts32km/h (20mph)24km/h (15mph)25km/h (16mph)23km/h (14mph)14km/h (9mph)18km/h (11mph)28km/h (17mph)30km/h (19mph)
Direction 47°
NE
62°
ENE
53°
NE
62°
ENE
76°
ENE
60°
ENE
51°
NE
55°
NE
Wind chill27°C (81°F)27°C (80°F)27°C (80°F)29°C (83°F)29°C (85°F)30°C (86°F)29°C (83°F)27°C (81°F)
Waves
Height0.8m (2.7ft)0.8m (2.6ft)0.8m (2.7ft)0.7m (2.4ft)0.7m (2.2ft)0.7m (2.2ft)0.7m (2.4ft)0.8m (2.6ft)
Direction 225°
SW
225°
SW
225°
SW
225°
SW
224°
SW
217°
SW
222°
SW
222°
SW
Period13.4 sec.13.3 sec.13.2 sec.13.2 sec.13.2 sec.13.1 sec.13.2 sec.13.2 sec.
Significant height1.0m (3.3ft)0.9m (3ft)1.0m (3.3ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.9m (3ft)0.9m (3ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 05:29 and will set at 18:09 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 88°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 16.8mph km/h (with gusts up to 22.4mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)26°C (80°F)26°C (79°F)28°C (83°F)27°C (80°F)31°C (87°F)28°C (82°F)27°C (81°F)
Perceived temperature30°C (85°F)29°C (84°F)28°C (83°F)31°C (88°F)28°C (82°F)34°C (94°F)31°C (88°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%77%78%69%62%61%70%74%
Barometric pressure1010 hPa1009 hPa1010 hPa1011 hPa1009 hPa1007 hPa1008 hPa1010 hPa
Cloud cover34%7%11%12%8%16%13%16%
Heat index30°C (85°F)29°C (84°F)28°C (83°F)31°C (88°F)28°C (82°F)34°C (94°F)31°C (88°F)30°C (86°F)
Dew point22°C (72°F)22°C (72°F)22°C (71°F)22°C (71°F)19°C (66°F)22°C (72°F)22°C (71°F)22°C (72°F)
Wind
Speed17km/h (11mph)15km/h (9mph)12km/h (7mph)12km/h (7mph)12km/h (7mph)22km/h (14mph)27km/h (17mph)24km/h (15mph)
Gusts25km/h (16mph)22km/h (14mph)17km/h (11mph)16km/h (10mph)24km/h (15mph)36km/h (22mph)30km/h (19mph)36km/h (23mph)
Direction 68°
ENE
62°
ENE
64°
ENE
53°
NE
24°
NNE
34°
NE
45°
NE
54°
NE
Wind chill27°C (80°F)26°C (80°F)26°C (79°F)28°C (83°F)27°C (80°F)31°C (87°F)28°C (82°F)27°C (81°F)
Waves
Height0.8m (2.5ft)0.7m (2.5ft)0.7m (2.5ft)0.7m (2.4ft)0.7m (2.3ft)0.7m (2.4ft)0.9m (3.0ft)0.9m (2.9ft)
Direction 222°
SW
217°
SW
216°
SW
216°
SW
215°
SW
228°
SW
229°
SW
225°
SW
Period13.1 sec.12.8 sec.12.7 sec.12.6 sec.12.5 sec.12.5 sec.12.4 sec.13.2 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.9m (3ft)1.3m (4.3ft)1.1m (3.6ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 05:30 and will set at 18:09 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 85°F t and a low of 79°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 15.5mph km/h (with gusts up to 21.8mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)26°C (79°F)26°C (79°F)28°C (82°F)28°C (83°F)29°C (84°F)27°C (80°F)26°C (80°F)
Perceived temperature29°C (84°F)29°C (83°F)28°C (83°F)31°C (87°F)31°C (88°F)32°C (90°F)29°C (85°F)29°C (84°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%78%80%72%69%68%80%76%
Barometric pressure1010 hPa1008 hPa1009 hPa1010 hPa1010 hPa1008 hPa1009 hPa1010 hPa
Cloud cover35%45%19%15%52%65%62%19%
Heat index29°C (84°F)29°C (83°F)28°C (83°F)31°C (87°F)31°C (88°F)32°C (90°F)29°C (85°F)29°C (84°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (71°F)22°C (72°F)23°C (73°F)22°C (71°F)
Wind
Speed25km/h (15mph)22km/h (14mph)24km/h (15mph)24km/h (15mph)23km/h (14mph)21km/h (13mph)19km/h (12mph)16km/h (10mph)
Gusts35km/h (22mph)31km/h (19mph)35km/h (22mph)31km/h (19mph)33km/h (20mph)30km/h (19mph)29km/h (18mph)24km/h (15mph)
Direction 48°
NE
51°
NE
52°
NE
57°
ENE
41°
NE
53°
NE
73°
ENE
66°
ENE
Wind chill27°C (80°F)26°C (79°F)26°C (79°F)28°C (82°F)28°C (83°F)29°C (84°F)27°C (80°F)26°C (80°F)
Waves
Height0.9m (2.9ft)0.9m (3.0ft)0.9m (3.0ft)0.9m (2.9ft)0.8m (2.7ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.5ft)
Direction 225°
SW
225°
SW
239°
WSW
239°
WSW
240°
WSW
240°
WSW
238°
WSW
239°
WSW
Period11.8 sec.11.8 sec.16.7 sec.12.4 sec.12.7 sec.16.3 sec.15.8 sec.15.6 sec.
Significant height1.0m (3.3ft)1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)0.9m (3ft)0.6m (2ft)1.0m (3.3ft)0.9m (3ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 05:30 and will set at 18:09 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 81°F t and a low of 79°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 13.1mph km/h (with gusts up to 17.4mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)26°C (79°F)26°C (79°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)26°C (79°F)
Perceived temperature29°C (83°F)28°C (83°F)28°C (83°F)30°C (86°F)30°C (85°F)30°C (86°F)30°C (86°F)29°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%77%79%75%73%73%76%81%
Barometric pressure1009 hPa1008 hPa1009 hPa1010 hPa1009 hPa1008 hPa1009 hPa1010 hPa
Cloud cover20%19%42%49%77%72%87%91%
Heat index29°C (83°F)28°C (83°F)28°C (83°F)30°C (86°F)30°C (85°F)30°C (86°F)30°C (86°F)29°C (83°F)
Dew point22°C (71°F)22°C (71°F)22°C (72°F)22°C (72°F)22°C (71°F)22°C (72°F)22°C (72°F)22°C (72°F)
Wind
Speed18km/h (11mph)20km/h (13mph)20km/h (13mph)21km/h (13mph)18km/h (11mph)18km/h (11mph)19km/h (12mph)19km/h (12mph)
Gusts27km/h (17mph)28km/h (17mph)28km/h (18mph)27km/h (17mph)26km/h (16mph)25km/h (16mph)27km/h (17mph)27km/h (17mph)
Direction 80°
E
68°
ENE
60°
ENE
54°
NE
49°
NE
56°
ENE
57°
ENE
82°
E
Wind chill26°C (79°F)26°C (79°F)26°C (79°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)26°C (79°F)
Waves
Height0.8m (2.6ft)0.8m (2.7ft)0.8m (2.7ft)0.9m (3.1ft)0.9m (3.0ft)0.9m (3.1ft)1.0m (3.4ft)1.0m (3.1ft)
Direction 239°
WSW
239°
WSW
237°
WSW
237°
WSW
237°
WSW
238°
WSW
236°
SW
236°
SW
Period15.5 sec.15.2 sec.14.7 sec.14.6 sec.14.6 sec.14.4 sec.13.7 sec.13.6 sec.
Significant height0.9m (3ft)0.9m (3ft)1.0m (3.3ft)1.1m (3.6ft)1.1m (3.6ft)1.2m (3.9ft)1.3m (4.3ft)0.9m (3ft)
Sea water temperature
Water temperature29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 05:30 and will set at 18:08 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 12.4mph km/h (with gusts up to 19.3mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)26°C (78°F)26°C (78°F)26°C (79°F)27°C (81°F)28°C (82°F)27°C (80°F)25°C (76°F)
Perceived temperature28°C (83°F)28°C (82°F)28°C (82°F)29°C (84°F)29°C (85°F)31°C (87°F)30°C (85°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity80%81%82%79%69%71%77%89%
Barometric pressure1009 hPa1008 hPa1009 hPa1010 hPa1009 hPa1008 hPa1009 hPa1011 hPa
Cloud cover55%89%63%80%76%100%85%71%
Heat index28°C (83°F)28°C (82°F)28°C (82°F)29°C (84°F)29°C (85°F)31°C (87°F)30°C (85°F)27°C (81°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)21°C (70°F)22°C (72°F)22°C (72°F)23°C (73°F)
Wind
Speed13km/h (8mph)13km/h (8mph)13km/h (8mph)16km/h (10mph)20km/h (13mph)17km/h (11mph)17km/h (10mph)12km/h (7mph)
Gusts18km/h (11mph)18km/h (11mph)19km/h (12mph)22km/h (14mph)31km/h (19mph)25km/h (16mph)24km/h (15mph)17km/h (11mph)
Direction 64°
ENE
79°
E
46°
NE
52°
NE
75°
ENE
47°
NE
56°
NE
81°
E
Wind chill26°C (79°F)26°C (78°F)26°C (78°F)26°C (79°F)27°C (81°F)28°C (82°F)27°C (80°F)25°C (76°F)
Waves
Height0.8m (2.6ft)0.8m (2.5ft)0.9m (2.8ft)0.9m (3.0ft)0.8m (2.7ft)0.7m (2.5ft)0.7m (2.4ft)0.7m (2.4ft)
Direction 236°
SW
236°
WSW
237°
WSW
236°
WSW
236°
SW
236°
SW
237°
WSW
238°
WSW
Period13.6 sec.13.6 sec.13.3 sec.13.0 sec.12.7 sec.12.7 sec.12.7 sec.12.6 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)1.1m (3.6ft)0.9m (3ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 05:30 and will set at 18:08 on the beach(es) of Playa Arenillas. The outside temperature will be a high of 77°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 9.3mph km/h (with gusts up to 13.1mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%85%85%86%86%89%89%86%
Barometric pressure1010 hPa1008 hPa1009 hPa1011 hPa1010 hPa1009 hPa1009 hPa1011 hPa
Cloud cover72%54%100%86%73%78%76%66%
Heat index27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)27°C (81°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)
Wind
Speed11km/h (7mph)9km/h (6mph)13km/h (8mph)15km/h (10mph)12km/h (8mph)14km/h (9mph)14km/h (9mph)12km/h (7mph)
Gusts16km/h (10mph)13km/h (8mph)19km/h (12mph)21km/h (13mph)18km/h (11mph)20km/h (13mph)21km/h (13mph)18km/h (11mph)
Direction 81°
E
58°
ENE
68°
ENE
60°
ENE
97°
E
109°
ESE
134°
SE
114°
ESE
Wind chill25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (76°F)25°C (77°F)25°C (77°F)
Waves
Height0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.4ft)0.7m (2.4ft)0.8m (2.5ft)0.8m (2.7ft)0.9m (2.9ft)
Direction 239°
WSW
239°
WSW
240°
WSW
242°
WSW
245°
WSW
247°
WSW
218°
SW
218°
SW
Period12.2 sec.12.0 sec.7.5 sec.7.4 sec.7.5 sec.7.6 sec.7.8 sec.7.7 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)
Sea water temperature
Water temperature29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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