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Compare Costa Rica weather in February, from dry and sunny Tamarindo to wetter Puerto Viejo, plus Jacó, Arenal and San José.
Atenas Weather in May
In Atenas, May brings high daytime temperatures around 28°C (82°F), with nights cooling to 20°C (68°F). This month falls within the rainy season, so expect frequent rainfall.
Rainfall in Atenas in May
Atenas is in the rainy season in May, with rain on around 19 days and an average of 389 mm (15 in). The rain this month falls heavily when it arrives, so waterproofs are worth keeping handy.
Temperature in Atenas in May
Daytime temperatures in Atenas reach 28°C (82°F) in May, dropping to 20°C (68°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 20°C (68°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Atenas in May
With about 183 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit Atenas. Our weather planner can help you explore destinations with more pleasant weather conditions.
Atenas Temperature in May
Min Temperature
20°C (68°F)
Max Temperature
28°C (82°F)
Chance of Rain
62%
Precipitation
389 mm (15 in)
Rainy days
19 days
Humidity
84% *
Sunshine
183 hours *
Percentage Sunshine
*
* Data from: Santamaria, Costa Rica (25 KM, 15 Miles).
Atenas Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Atenas - and find the best time to visit.
Daily Historical Temperatures
43-year average (1977-2025)
Based on our historical records, temperatures in Atenas typically stay consistent throughout May, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows around 20°C (68°F).
Average temperatures in May
Daily Historical Precipitation
43-year average (1977-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Atenas in May
Browse day-by-day weather records for Atenas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Atenas historical weather extremes in May
According to our 29 years of weather records for Atenas, the following extremes were recorded between 1997 and 2026.
- Atenas recorded its highest May temperature of 34°C (93°F) on May 25, 2017.
- The lowest daytime temperature in May was 19°C (66°F), recorded on May 29, 2008.
- The lowest overnight temperature recorded in May was 16°C (61°F) (May 7, 2013).
- The wettest day in May Atenas was on May 15, 2001 with 156 mm (6.1 in) of precipitation.
Best Places in Costa Rica in May
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Atenas in May
Warm temperatures in May make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Atenas in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Atenas 3-Day Forecast
More climate data for Atenas
Temperature Rainfall Sunshine Humidity
See the full Atenas climate overview or explore weather in Costa Rica.
Popular in May
Where to go in May - average daytime high across popular destinations.
Tamarindo
32°C (90°F) Santa Teresa29°C (84°F) Cahuita29°C (84°F) Fortuna29°C (84°F) Herradura29°C (84°F) Puerto Viejo de Talamanca29°C (84°F) Jacó29°C (84°F) San José25°C (77°F) Bucket list
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