Winter
Dec → Feb26°
nights 20 to 21°
- 26 rainy days · 497 mm
When is the best time to visit Arenal Volcano?
- Jan26°recommended
- Feb26°recommended
- Mar28°recommended
- Apr29°recommended
- May28°fair
- Jun27°not recommended
- Jul27°not recommended
- Aug27°not recommended
- Sep28°not recommended
- Oct27°not recommended
- Nov26°fair
- Dec26°recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Arenal Volcano, month by month
The table of records, month by month
| Month | High | Low | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|
| January | 26° | 20° | 569 mm | 27 d | ✓ |
| February | 26° | 20° | 317 mm | 23 d | ✓ |
| March | 28° | 20° | 303 mm | 23 d | ✓ |
| April | 29° | 21° | 226 mm | 21 d | ✓ |
| May | 28° | 22° | 333 mm | 27 d | |
| June | 27° | 22° | 411 mm | 30 d | |
| July | 27° | 22° | 515 mm | 30 d | |
| August | 27° | 22° | 346 mm | 30 d | |
| September | 28° | 22° | 299 mm | 28 d | |
| October | 27° | 22° | 508 mm | 30 d | |
| November | 26° | 21° | 594 mm | 29 d | |
| December | 26° | 21° | 604 mm | 29 d | ✓ |
The four seasons in Arenal Volcano, in figures
What the 2015-2024 records (La Fortuna) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May28 to 29°
nights 20 to 22°
- 24 rainy days · 287 mm
Summer
Jun → Aug27°
nights 22°
- 30 rainy days · 424 mm
Autumn
Sep → Nov26 to 28°
nights 21 to 22°
- 29 rainy days · 467 mm
Book early for December to April
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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What to do in Arenal Volcano, month by month
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hiking | ||||||||||||
| Towns & culture | ||||||||||||
| Events | 1 |
EventsIndependence Day celebrationsSeptemberDetails ↓
favourablewith compromisesunfavourable
Grid derived from the records (temperature, rainfall), not from an opinion.
What's on in Arenal Volcano, month by month?
What comes back every year, and when. Exact dates change from year to year, so check them before you book.
- SeptemberIndependence Day celebrations
On the evening of 14 September, children parade with paper lanterns, ahead of the school marching bands on the 15th.
Travelling off-peak
Month by month, in detail
January
Recommended26°20° at night
- 569 mm · 27 d
High season, book early
February
Recommended26°20° at night
- 317 mm · 23 d
High season, book early
March
Recommended28°20° at night
- 303 mm · 23 d
Busy, without the crush
April
Recommended29°21° at night
- 226 mm · 21 d
Busy, without the crush
May
Fair28°22° at night
- 333 mm · 27 d
Low season, lower prices
June
Not recommended27°22° at night
- 411 mm · 30 d
Low season, lower prices
July
Not recommended27°22° at night
- 515 mm · 30 d
Low season, lower prices
August
Not recommended27°22° at night
- 346 mm · 30 d
Low season, lower prices
September
Not recommended28°22° at night
- 299 mm · 28 d
Low season, lower prices
October
Not recommended27°22° at night
- 508 mm · 30 d
Low season, lower prices
November
Fair26°21° at night
- 594 mm · 29 d
Low season, lower prices
December
Recommended26°21° at night
- 604 mm · 29 d
High season, book early
Read the twelve months in detail
January. 26 °C in the afternoon and 20 °C at night. Frequent rain: 569 mm over 27 days. High season: book early.
February. 26 °C in the afternoon and 20 °C at night. Frequent rain: 317 mm over 23 days. High season: book early.
March. 28 °C in the afternoon and 20 °C at night. Frequent rain: 303 mm over 23 days. Busy season, without the crush.
April. 29 °C in the afternoon and 21 °C at night. Frequent rain: 226 mm over 21 days. Busy season, without the crush.
May. 28 °C in the afternoon and 22 °C at night. Frequent rain: 333 mm over 27 days. Low season: fewer people, lower prices.
June. 27 °C in the afternoon and 22 °C at night. A very wet month, 411 mm of rain over 30 days. Low season: fewer people, lower prices.
July. 27 °C in the afternoon and 22 °C at night. A very wet month, 515 mm of rain over 30 days. Low season: fewer people, lower prices.
August. 27 °C in the afternoon and 22 °C at night. A very wet month, 346 mm of rain over 30 days. Low season: fewer people, lower prices.
September. 28 °C in the afternoon and 22 °C at night. A very wet month, 299 mm of rain over 28 days. Low season: fewer people, lower prices.
October. 27 °C in the afternoon and 22 °C at night. A very wet month, 508 mm of rain over 30 days. Low season: fewer people, lower prices.
November. 26 °C in the afternoon and 21 °C at night. Frequent rain: 594 mm over 29 days. Low season: fewer people, lower prices.
December. 26 °C in the afternoon and 21 °C at night. Frequent rain: 604 mm over 29 days. High season: book early.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Arenal Volcano?
December to April: over these months, recorded highs range from 26 to 29 °C, with 25 days of rain a month on average (2015-2024 records, La Fortuna).
Which month should you avoid in Arenal Volcano?
July: it is the wettest of the months to avoid, with 515 mm over 30 days of rain on average, according to 2015-2024 records at the reference point (La Fortuna).
What is the hottest month in Arenal Volcano?
April, with 29 °C on average in the afternoon and 21 °C at night. 2015-2024 records (La Fortuna).
What is the coldest month in Arenal Volcano?
January, with 26 °C at best during the day and 20 °C at night. 2015-2024 records (La Fortuna).
What is the driest month in Arenal Volcano?
April: 226 mm over 21 days of rain, against 604 mm in December, the wettest month.
Plan this trip
📒 The free printable Arenal Volcano guide: itinerary, map, where to sleep→
🧭 When to visit Costa Rica: the country overview→
🗓️ Best time to visit: all our destinations→
Compare with other destinations
Photos: Jennifer Hernandez / Pexels · descubriendoelmundo / CC BY-SA 2.0 (Wikimedia Commons) · Gianna H. Jimenez / Pexels · Brian Parra Artavia / Pexels · Nothing Ahead / Pexels · Osmany Mederos / Pexels