The best times to visit Arenal Volcano Region for ideal weather are
December 3rd to April 15th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Arenal Volcano Region Travel Guide
Other Arenal Volcano Region Travel Info
Weather in Arenal Volcano Region
Temperature
Average temperatures in Arenal Volcano Region vary barely at all. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 48th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Arenal Volcano Region, the hottest months are April, March, and then February. See average monthly temperatures below. The warmest time of year is generally late March where highs are regularly around 88°F (31.1°C) with temperatures rarely dropping below 65°F (18.3°C) at night.
Arenal Volcano Region Temperatures (Fahrenheit)
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Arenal Volcano Region Temperatures (Celsius)
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“Feels-Like” Temperatures
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Arenal Volcano Region Perceived Temperature (F)
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Arenal Volcano Region Perceived Temperature (C)
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Average Arenal Volcano Region Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
Show Fahrenheit
| Month | Avg. High (°F) | Avg. Mean (°F) | Avg. Low (°F) |
|---|---|---|---|
| Jan | 83.4 | 72.8 | 65.2 |
| Feb | 84.9 | 73.3 | 64.6 |
| Mar | 86.3 | 73.9 | 65 |
| Apr | 87 | 74.4 | 65.7 |
| May | 84.6 | 73.1 | 65.9 |
| Jun | 83.4 | 72.6 | 65.8 |
| Jul | 83 | 72.7 | 66.1 |
| Aug | 83.2 | 72.1 | 65.1 |
| Sep | 83.1 | 71.6 | 64.8 |
| Oct | 81.5 | 71 | 64.8 |
| Nov | 81.7 | 71.4 | 64.5 |
| Dec | 82.8 | 72.3 | 64.6 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 28.6 | 22.7 | 18.4 |
| Feb | 29.4 | 22.9 | 18.1 |
| Mar | 30.2 | 23.3 | 18.3 |
| Apr | 30.6 | 23.6 | 18.7 |
| May | 29.2 | 22.8 | 18.8 |
| Jun | 28.6 | 22.6 | 18.8 |
| Jul | 28.3 | 22.6 | 18.9 |
| Aug | 28.4 | 22.3 | 18.4 |
| Sep | 28.4 | 22 | 18.2 |
| Oct | 27.5 | 21.7 | 18.2 |
| Nov | 27.6 | 21.9 | 18.1 |
| Dec | 28.2 | 22.4 | 18.1 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Arenal Volcano Region are January, March, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid January. For example, on the week of January 15th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid October with an average of 5 days of significant precipitation the week of October 15th.
When can you find snow in Arenal Volcano Region? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Arenal Volcano Region.
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Snow on the Ground
The graph below shows the average snow on the ground in Arenal Volcano Region (in).
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Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 1% | 0 | 0.1 |
| Feb | 3% | 0 | 0.3 |
| Mar | 3% | 0 | 0.2 |
| Apr | 21% | 0 | 3.1 |
| May | 40% | 0 | 7.7 |
| Jun | 44% | 0 | 10.4 |
| Jul | 36% | 0 | 6.9 |
| Aug | 43% | 0 | 9.4 |
| Sep | 59% | 0 | 12.5 |
| Oct | 58% | 0 | 13.9 |
| Nov | 33% | 0 | 7.2 |
| Dec | 5% | 0 | 0.8 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 1 | 0 | 0.3 |
| Feb | 3 | 0 | 0.8 |
| Mar | 3 | 0 | 0.5 |
| Apr | 21 | 0 | 7.9 |
| May | 40 | 0 | 19.6 |
| Jun | 44 | 0 | 26.4 |
| Jul | 36 | 0 | 17.5 |
| Aug | 43 | 0 | 23.9 |
| Sep | 59 | 0 | 31.8 |
| Oct | 58 | 0 | 35.3 |
| Nov | 33 | 0 | 18.3 |
| Dec | 5 | 0 | 2 |
Humidity and Wind
Arenal Volcano Region has some extremely humid months, with other moderately humid months on the other side of the year. The least humid month is February (49.8% relative humidity), and the most humid month is October (81.5%).
Wind in Arenal Volcano Region is usually moderate. The windiest month is January, followed by March and February. January’s average wind speed of around 10.9 knots (12.5 MPH or 20.2 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid January where average top sustained speeds reach 18 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Arenal Volcano Region.
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Wind
The graph below shows wind speed (max and average) in knots.
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Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
| Month | Avg. Wind | Avg. Wind Feel | Sustained High Wind | High Wind Feel |
| Jan | 10.9 | Gentle breeze | 17.2 | Strong breeze |
| Feb | 10.2 | Gentle breeze | 16.7 | Significant breeze |
| Mar | 10.4 | Gentle breeze | 16.7 | Strong breeze |
| Apr | 7.5 | Gentle breeze | 13.8 | Significant breeze |
| May | 5.8 | Light breeze | 12.2 | Strong breeze |
| Jun | 5.4 | Light breeze | 11.9 | Significant breeze |
| Jul | 6.2 | Light breeze | 12.3 | Strong breeze |
| Aug | 5.3 | Light breeze | 11.7 | Significant breeze |
| Sep | 4.7 | Light breeze | 11.5 | Strong breeze |
| Oct | 4.4 | Light breeze | 10.8 | Gentle breeze |
| Nov | 6 | Light breeze | 12.1 | Strong breeze |
| Dec | 8.1 | Gentle breeze | 14.2 | Significant breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 51.8% |
| Feb | 49.8% |
| Mar | 49.9% |
| Apr | 57.3% |
| May | 71% |
| Jun | 76.1% |
| Jul | 72.3% |
| Aug | 76% |
| Sep | 80.3% |
| Oct | 81.5% |
| Nov | 72.4% |
| Dec | 60.2% |
Is it Safe to Travel to Arenal Volcano Region?
Our best data indicates this area is somewhat safe. As of Dec 04, 2023 there are travel warnings for Costa Rica; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 14, 2023.
The Busiest and Least Crowded Months
The busiest month for tourism in Arenal Volcano Region, Costa Rica is January, followed by February and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Arenal Volcano Region in September. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
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Overall Arenal Volcano Region Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 88°F (31.1°C) and 82.8°F (28.2°C) with similar temperatures in the later months. Rain is somewhat common with 1 to 12 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 11 to 13 days of precipitation per month. June – August is fairly slow season for tourism in Arenal Volcano Region, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 83.4°F (28.6°C) and 80.2°F (26.8°C), which will feel very nice given the humidity and wind. It rains or snows a great amount: 10 to 18 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is perfect this time of year in Arenal Volcano Region to be enjoyable for warm weather travelers. The average high during this season is between 85.5°F (29.7°C) and 82.4°F (28°C). On average, it rains or snows a smalll amount: 0 to 2 times per month. These times of year are the busiest with tourists.
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