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Jaco Costa Rica Weather: When to Go and What to Expect

The weather in Jaco Costa Rica is always warm, which is perfect for swimming and exploring. The only thing that changes is how much rain falls.

This rain determines the dry season and the rainy season, the two seasons from the country.

This article tells you about the temperatures in Jaco Costa Rica.

You will also learn about the weather all year round in Jaco and when is the best time to visit this area.

What is the weather like in Jaco

The climate in Jaco Costa Rica is warm all year round, no matter when you choose to visit it.

It is the perfect destination for sun and warm days during the winter months when it’s cold in other parts of the world.

So if you’re looking to escape the cold weather, Jaco is a great option for spending your next holiday in a warm place.

The wind is blowing at a moderate speed. But when the humidity index is high, it feels like the temperature is higher than it actually is.

The rainiest months of the year are September and October.

This is when there is an average of more than 28 days with heavy rains.

The temperatures all year round do not vary a lot.

The coldest month of the year is October with 79 degrees Fahrenheit or 26 degrees Celsius.

March is the hottest month in Costa Rica with 84 degrees F or 29 degrees Celsius.

Weather for Costa Rica Jaco

Jaco Costa Rica has two main seasons:

– the dry season which goes from December to April

– the rainy season which goes from May to December

The rainiest months are September and October. January, February and March, and April have only 2 or 3 days of rain each.

The temperatures rise during the day during the dry season. This can be dangerous, especially in downtown.

The heatwave is at its worst between 11 a.m. and 16 p.m. that is why we recommend you to stay in the house during these hours.

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weather for Costa Rica Jaco
weather in Costa Rica Jaco

Weather for Jaco Costa Rica- rainfall

Jaco Costa Rica has two main seasons: the dry season that lasts from December to April and the rainy season from May to December.

The rainiest months are September and October as well as in Central Valley, while the period May to August is characterized by short afternoon showers that last for a couple of hours.

January, February and March and April are dry months with only 2 or a maximum of 3 days of rain on a monthly basis.

The maximum temperature is around 92 degrees Fahrenheit (33 degrees Celsius) while mornings and evenings are cooler with an average temperature around 70 degrees Fahrenheit (21 degrees Celsius).

The green season lasts from May to August. This is the time when it rains more often, but the rain usually only lasts for a couple of hours.

In addition, the mornings are usually sunny, and prices are lower than during other times of the year.

This makes visiting Costa Rica during this season a great idea.

Weather for Costa Rica by month
Weather forecast for Costa Rica by month

The temperatures are still high, around 85 degrees Fahrenheit (29 degrees Celsius) so you should consider this time of the year for planning a trip to this tropical country.

The heavy rain season lasts from September to October and we strongly recommend avoiding visiting Costa Rica during these months, except for the Caribbean coast which is sunny and warm.

Heavy rains, flooding, and severe weather might keep you in the house for many hours or days.

The shoulder season is from November to December. The number of sunny days will increase, and the amount of rain will decrease significantly.

Jaco does not have a weather station to predict the exact weather from the area.

To find out about the weather here, you can check the weather for Puntarenas which is just 50 kilometers away.

Now let’s see how the weather is on each month and when you should visit Costa Rica for good weather, low prices, and fewer tourists.

These are the new essentials you have to pack for your trip

The monthly breakdown for Costa Rican weather

January for Costa Rica Jaco

What can be more relaxing than spending a few days on the beach, perfecting your tan, and practicing all kinds of watersports when at home are negative temperatures and snow?!

The high temperature in March is around 86 degrees Fahrenheit (30 degrees Celsius), and the number of rainy days is close to 0 ( maximum 1.5 days with rain).

February weather in Jaco

With temperatures similar to January, February also comes with great weather, many sunny days, and very few precipitations.

February and March have the lowest humidity rates of the year, around 67%.

In these months, there are about 7 days with rain, so pack a raincoat with you.

The water temperature is around 84 degrees Fahrenheit (29 degrees Celsius), perfect for bathing and relaxing in the ocean.

Weather for Jaco Costa Rica
Weather in Costa Rica Jaco

March weather for Jaco Costa Rica

March is the month of the year with the highest water temperature of the whole year and many sunny days.

On average, there are 10 days in the entire month when short rains and scattered showers might appear.

In March, the highest average temperature is around 31 degrees Celsius (88 degrees F), while the minimum temperatures are around 25 degrees Celsius (77 degrees F).

April weather

The last month of the dry season is usually warm, with a few scattered showers.

The average humidity level is at about 70%, while the maximum temperature reaches 88 degrees Fahrenheit (31 degrees Celsius).

Costa Rica weather in April
Costa Rica weather in April

May in Jaco

The first month of the rainy season comes with scattered showers and afternoon rains.

Most of the mornings are sunny and warm, perfect for hiking and exploring the area.

The humidity level increased from one day to the next, reaching 77%.

The number of rainy days also increased, going up to 25 out of 31. This means that the weather in Jaco Costa Rica in May is quite rainy.

The temperatures are still high, around 86 degrees Fahrenheit (30 degrees Celsius); the only minus is the rain that drops daily.

June weather

June is another warm month in Costa Rica with lower prices and fewer tourists roaming around.

The average sea water temperature is 84 degrees Fahrenheit (29 degrees Celsius) and the air temperature is 82 degrees Fahrenheit (28 degrees Celsius).

The main disadvantage of this month is the increased number of rainy days.

About 25 days will have some rain, luckily most of it happens in the afternoon and it doesn’t last long.

Costa Rica Weather in June
Costa Rica June Weather

Weather in Costa Rica Jaco in July

The second part of July or the first time of August (period might vary from year to year) is a short summer.

The locals call it veranillo, a time with great weather and low prices all over the country.

July days in Jaco are full of the sun which makes this month a great time to go to Costa Rica.

The rains we’ve been having have made the trees green again and the flowers are blooming.

The animals are coming out of their hiding places to look for food and water.


Weather for Jaco Costa Rica August

In August, it rains 25 days and the temperature is still high, between 77 to 80 degrees Fahrenheit or 25 to 27 degrees Celsius.

It is the last month with scattered rains as September and October come with heavy rains, flooding, and landslips.

The average sea temperature is 29 degrees Celsius (84 degrees Fahrenheit), but the water visibility is not very good because of the rain.

September and October weather for Costa Rica Jaco

September and October are the rainiest months of the year. If you’re planning a trip to Costa Rica, it’s best to avoid those months.

The only part of Costa Rica that has sun and no rain is on the Caribbean Coast.

If you want to visit Costa Rica during these months, head to that coast where the days are sunny and warm.

Costa Rica weather in October
Costa Rica October weather

Although heavy rains are frequent, the temperature is still high, with a maximum of 84 degrees Fahrenheit (29 degrees Celsius).

In Jaco, Costa Rica, the average wind speed is 7 miles per hour in October.

This means that the wind will make it rain even harder this month.

November in Jaco

With a humidity level of about 79%, November is considered a shoulder month, as well as May .

The temperatures are high, around 84 degrees Fahrenheit (29 degrees Celsius) and the number of rainy days is around 24.

Most of the rains are afternoon showers, while the mornings are sunny and warm, perfect for exploring and bathing.

Weather for Costs Rica Jaco in December

December is the first month of the dry season, a hot month with many sunny days and wonderful weather.

This is the busiest month of the year because many people are travelling to Costa Rica to spend their winter holidays in a warm and sunny place.

Costa rica weather in December
Costa Rica December weather


The dry season or the high season lasts from December to April and it comes with great weather but it is extremely busy and expensive although the weather for Jaco Costa Rica is perfect for sightseeing.

May and November on the other hand are considered to be shoulder season months for Jaco Costa Rica, a time of the year when everything is green and lush, the tourists are not here yet and the prices are still low.

I think that these two months are a great time to visit the Costa Rica Jaco area, the Osa Peninsula, and the Central Valley because of the good weather and prices.

Logistical tips and tricks for your trip

Book your accommodation
We always use as they have the best price-quality ratio and they offer a wide range of hotels, guesthouses, apartments, and villas to choose from.

You will find here all types of accommodations, from the cheapest ones to the most luxurious.

Don't forget travel insurance
We never leave home without HeyMondo Insurance or Safety Wings Insurance as they offer the best services and a good value for money.

When we go for longer trips around the world we get Globelink Insurance as it offers a good cover for an affordable price.

Travel insurance will always protect you against unexpected costs caused by medical events like illness, injury, theft, or travel cancellation.

We never go on any trip without travel insurance and there were many cases when we had to use it.

Renting a car
We like to explore a country on our own and a car gives us the mobility and freedom to do that.

We always rent our car from Discovercars as they have free cancellation 48 hours prior to starting date and a wide range of car rental companies and options to choose from all over the world.

Tours and attractions
When we are looking for some adventure or we simply want to break up the monotony and discover new places, we always use GetYourGuide.

We love it because we always find the most amazing experiences, with free cancellation and a large variety of activities and tours to choose from.

Airplane tickets and holiday packages
Expedia is our ally when searching for the best price for airplane tickets as it works as an aggregator for a huge number of airlines and we always find the best price for our flights.

Travel tip: use Expedia when you are searching for holiday packages as they have many last-minute offers and great discounts for hotels, flights, and even the whole holiday packages.