Our verdict
The best time to visit Jaco is February-April
The very hottest temperatures in Jaco get to around 32℃ (89℉) in the height of summer. In the winter months, it can get down to as low as 23℃ (74℉) at night.
If you’re a sun-chaser and want to visit Jaco when the days are longest, you should visit in July. The wet season in Jaco usually falls during the months surrounding October each year. It’s not uncommon to get some decent rainfall or light showers during this time, but on some days the weather tends to be fine for a majority of the day, with only a few drops of rain falling from a passing shower.
Learn everything you need to know to help you decide when to go to Jaco below, and don’t forget to use the awesome travel tools we know and love to help you find the best deals and make booking your vacation a breeze!
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Jaco seasons
Before you continue, it’s important to know when the seasons are in Jaco as they might be different to yours depending on where in the world you’re travelling from. Jaco is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Jaco
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Jaco for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Jaco climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Jaco for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Jaco in January
- Average temperature: 27℃ (80℉)
- Average high temperature: 30℃ (85℉)
- Average low temperature: 25℃ (76℉)
- Average humidity: 70%
- Average sunny days: 18 days
- Average rainfall: 22mm (1") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in January, make sure you pack t-shirts and light clothing.
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Jaco in February
- Average temperature: 27℃ (81℉)
- Average high temperature: 30℃ (86℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 68%
- Average sunny days: 17 days
- Average rainfall: 11mm (0") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in February, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Jaco in March
- Average temperature: 28℃ (82℉)
- Average high temperature: 30℃ (87℉)
- Average low temperature: 25℃ (78℉)
- Average humidity: 68%
- Average sunny days: 19 days
- Average rainfall: 17mm (1") over 10 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in March, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Jaco in April
- Average temperature: 28℃ (83℉)
- Average high temperature: 30℃ (87℉)
- Average low temperature: 26℃ (79℉)
- Average humidity: 71%
- Average sunny days: 8 days
- Average rainfall: 68mm (3") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in April, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Jaco in May
- Average temperature: 28℃ (82℉)
- Average high temperature: 29℃ (85℉)
- Average low temperature: 26℃ (79℉)
- Average humidity: 77%
- Average sunny days: 4 days
- Average rainfall: 201mm (8") over 25 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in May, make sure you pack t-shirts and light clothing.
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Jaco in June
- Average temperature: 27℃ (81℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 26℃ (78℉)
- Average humidity: 80%
- Average sunny days: 5 days
- Average rainfall: 119mm (5") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in June, make sure you pack t-shirts and light clothing.
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Jaco in July
- Average temperature: 27℃ (81℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 25℃ (78℉)
- Average humidity: 79%
- Average sunny days: 6 days
- Average rainfall: 138mm (5") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in July, make sure you pack t-shirts and light clothing.
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Jaco in August
- Average temperature: 27℃ (81℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 26℃ (78℉)
- Average humidity: 79%
- Average sunny days: 7 days
- Average rainfall: 108mm (4") over 23 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in August, make sure you pack t-shirts and light clothing.
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Jaco in September
- Average temperature: 27℃ (80℉)
- Average high temperature: 29℃ (83℉)
- Average low temperature: 25℃ (78℉)
- Average humidity: 79%
- Average sunny days: 6 days
- Average rainfall: 131mm (5") over 24 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in September, make sure you pack t-shirts and light clothing.
Jaco in October
- Average temperature: 26℃ (80℉)
- Average high temperature: 28℃ (82℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 80%
- Average sunny days: 4 days
- Average rainfall: 383mm (15") over 26 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in October, make sure you pack t-shirts and light clothing.
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Jaco in November
- Average temperature: 27℃ (80℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 79%
- Average sunny days: 4 days
- Average rainfall: 130mm (5") over 25 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in November, make sure you pack t-shirts and light clothing.
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Jaco in December
- Average temperature: 27℃ (80℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 75%
- Average sunny days: 12 days
- Average rainfall: 41mm (2") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Jaco in December, make sure you pack t-shirts and light clothing.
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