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Climate in Costa Rica


Average weather, temperature, rainfall, sunshine

Flag - Costa Rica

Map - Costa Rica

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The climate in Costa Rica, a Central American country extending from 8 to 11 degrees north latitude, is tropical, hot all year round, in the plains and along the coasts, while it's milder on the plateau, that is, in the so-called tierras templadas.
Temperature variations are low because the country is located near the Equator, so the main difference between the seasons is found in the rains. Anyway, most of the country is so rainy that it is covered with rainforests.
On the Pacific coast and the plateau, there are a dry season from December to April and a rainy season from May to November, during which rainfall is abundant. In contrast, in the eastern plains and coasts (but also in the southernmost part of the Pacific coast) the climate is equatorial, with abundant rainfall throughout the year.
The sea is warm all year round on both coasts.

The climate in detail


  • Caribbean coast - Puerto Limón
  • Pacific coast - Puntarenas, Quepos
  • Hills and mountains - San José
  • Hurricanes
  • When to go
  • What to pack
  • Climate data

Caribbean coast



The east coast and the plain overlooking the Caribbean Sea are rain-soaked, and receive more than 3,000 millimeters (120 inches) per year; here the climate can be defined as equatorial, that is, with no dry season. This happens because the north-east trade winds, which blow from November to April, directly hit this area. However, there are two peaks, in July and December, both with about 440 mm (17.5 in) of rain per month, and two relative minima in September-October and February-March, both with about 150/200 mm (6/8 in) per month. In this area, December is even the wettest month, and January is wetter than February and March. South of this coast, on the mountain slopes of the Braulio Carrillo National Park, precipitation reaches up to 5 meters (16.5 feet) per year!

Puerto Limón

Climate chart - Limón
Along the coast of the Caribbean Sea, the weather is hot and humid all year round, since the winds blow constantly from the sea, however, the temperatures are slightly lower from December to February.
In Puerto Limón, at 10 degrees north latitude, the maximum temperatures range from 29 °C (84 °F) in January and February, to 30.5 °C (87 °F) in September and October.
Here, 3,500 mm (140 in) of rain fall per year.
The sun on the east coast does not shine very often, as cloudy and rainy days are frequent all year round.
The sea in Puerto Limón and on the coast of the Caribbean Sea is warm all year round.

Puerto Limón

Pacific coast



The Pacific coast is slightly warmer than the Caribbean coast, especially in winter, when the north-east trade winds descend from the mountains and become hot and dry: the average daytime temperatures are around 30/32 °C (86/90 °F) in the least hot period, in October and November, while they can reach 34/35 °C (93/95 °F) in March and April, before the rainy season.
Here, there is a well-defined dry season from December to April, at least in the central-northern part, while going south, the dry season becomes progressively shorter (it rains fairly often even in December and April), and in the southernmost part the climate is even equatorial, like on the coast of the Caribbean Sea.

The north-central part (province of Guanacaste, canton of Puntarenas) is particularly hot from February to April, before the rains. In inland areas, the heat is even more intense than on the coast, for example, in Liberia, the average maximum in April is 36 °C (97 °F). Moreover, this is the least rainy area of the country, with average rainfall around 1,300/1,600 mm (51/63 in) per year and savanna-like vegetation.

Puntarenas

Climate chart - Puntarenas
In Puntarenas, located in the north-central part of the Pacific Coast, the heat is intense throughout the year, and from February to April, the maximum average exceeds 34 °C (93 °F).
On average, 1,600 mm (63 in) of rain fall per year, with a rainy season from May to November and a dry season from December to April.
In Puntarenas, the sun shines regularly in the dry season, while in the rainy season it shines for an average of about 5 hours a day.

Puntarenas

Quepos

Climate chart - Quepos
Further to the south, the Pacific Coast becomes more rainy, but in return, it is less hot, especially in spring. In Quepos (formerly Aguirre), located on the coast, south of San José, 3,500 mm (140 in) of rain fall per year; as you can see, the rains are very abundant from May to November, but even in April and December, they still amount to around 150 mm (6 in).

Near Quepos we find the Manuel Antonio National Park.

Further south, in the Osa peninsula and in the Golfo Dulce, it rains even more: in Golfito, 4,100 mm (161 in) of rain fall per year, and there is no real dry season, even though the rainfall drops to around 100 mm (4 in) per month from January to March. In the Corcovado National Park, a tropical rainforest is found.
On the Cocos Island, which is located in the Pacific Ocean, far to the south of the continent, the climate is equatorial as well.

Hills and mountains



In inland areas, between the two coasts, we find two mountain ranges, the Cordillera Central and the Cordillera de Talamanca.

San José

Climate chart - San José
The capital city, San José, is located in the central part, on the plateau that separates the two Cordilleras, at 1,100 meters (3,600 feet) above sea level, and therefore in the so-called Tierras templadas, thus it has pleasant temperatures throughout the year, with cool nights and warm days.
At Tobías Bolaños International Airport, located at 995 meters (3,264 feet) above sea level, daytime temperatures reach 28 °C (82.5 °F) in April, the last month of the dry season.
In San José, there is little rain from December to March, and it almost never rains in January and February. The rainy season runs from May to November, and the wettest months are September and October, with around 300 millimeters (12 inches) per month.
The sun frequently shines in the dry season, while it does not shine very often in the rainy season, when the sky is often cloudy.

San José

At high altitudes, in the so-called tierras frìas, above 2,000 meters (6,600 feet), the temperatures are low, especially in the winter months, and even more so on the slopes of the highest mountains and volcanoes, such as Cerro Chirripó, 3,820 meters (12,532 feet) high, or Irazú volcano, 3,431 meters (11,257 feet) high. Above 3,500 meters (11,500 ft), at night, it can freeze throughout the year.

Hurricanes



Costa Rica is almost always spared by the hurricanes of the Caribbean Sea, whose path is usually located to the north of the country; in fact, sometimes they can affect nearby Nicaragua. Consequently, the area most at risk is the northern one, which may sometimes be affected by them, maybe indirectly. The hurricane season runs from June to November (though they are most likely in October and November), that is, during the rainy season, which in any case is generally not recommended for a holiday.
The first hurricane to hit directly Costa Rica was Otto in November 2016, although Hurricane Nate, which formed on the sea to the east of the country in October 2017 and then moved north, has brought even more serious damage.

There are also depressions and tropical storms which can be formed on the Pacific. They are usually not intense because they affect the country in the early stages of their formation, and then move northwestward without making landfall; however, they can still bring heavy rains, which can cause landslides and floods.

When to go



The best time to visit Costa Rica, either for a beach holiday or for exploring the rich nature of the country, runs from January to mid-April, and in particular the months of February and March. In the lowlands, it's hot, the sun shines and there is little rain, except on the east coast, which is rainy throughout the year.
The capital, San José, can also be visited in December.
In the north-west (province of Guanacaste, canton of Puntarenas), where in December it rains already little, while the spring is very hot, you may prefer December and January.
In the south-west (southern part of the province of Puntarenas, see Quepos and Golfito, and Osa Peninsula), where in December it still rains quite frequently, you can go from January to mid-April.
On the Caribbean coast you can go in February and March.

What to pack



For San José and the tierras templadas: all year round, bring light clothing, a sweatshirt or sweater for the evening; a raincoat or umbrella from May to November.
For plains and coasts: bring lightweight clothes; in the rainy season, you can add a light sweatshirt and a light raincoat for thunderstorms.
For the high mountains: bring warm clothes, a jacket, hiking boots.

Climate data - Costa Rica


Temperatures: °C, Precipitation: mm
Liberia
Liberia, location on the map
Liberia, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.212222232423232323232221
Max temp.333435363432333332313233
Precip.0052519524515521034531010010
Prec. days00019141012171662
Humidity53%49%46%49%65%75%70%73%80%81%72%61%
Day length116118121124126127127124122119116115
Sun hours101010976665678

Limón
Limón, location on the map
Limón, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.212122222323232323232221
Max temp.292929303030303031313029
Precip.320235210265335290425305140205400445
Prec. days171414141616201611131718
Humidity80%78%76%77%80%80%82%80%77%78%82%81%
Day length116118121124126127126124122119117116
Sun hours556654455545
Sea temp282828292929282929292828

Puntarenas
Puntarenas, location on the map
Puntarenas, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.222223242424232323232322
Max temp.343434353332323232323232
Precip.5553020521517522529528013030
Prec. days2238192118222424156
Day length116118121124126127126124122119117116
Sun hours899865565568
Sea temp282929302929292929282828

Quepos
Quepos, location on the map
Quepos, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.222223242323232323232323
Max temp.313232323131313030303031
Precip.452540155390415445470545535350160
Prec. days745122324262627272315
Day length116118121123126127126124122119117116
Sun hours788876666666
Sea temp282929302929292929282828

San José (995 meters)
San José, location on the map
San José, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.181818191919201918181919
Max temp.262627282827272727262627
Precip.155204523024021024031030514540
Prec. days2025172020212222134
Humidity61%59%57%59%70%73%71%71%73%76%72%65%
Day length116118121124126127126124122119117116
Sun hours788754444456



See also the temperatures month by month

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