Weather in Costa Rica for May 2025
In general, the average temperature in Costa Rica at the beginning of May is 28 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25.4 °C by the end of May.
Costa Rica experiences an exceptionally high level of rainfall in May, with more than 24 rainy days on average.
Is May a good time to visit Costa Rica? check out the best time to travel to Costa Rica page.
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Costa Rica in May average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 27° | 3 29° | 4  28° | |||
| 5  28° | 6  28° | 7 28° | 8 28° | 9  27° | 10 28° | 11 28° |
| 12 27° | 13 26° | 14 27° | 15 27° | 16 25° | 17 26° | 18 28° |
| 19 27° | 20 26° | 21 28° | 22 27° | 23 28° | 24 28° | 25 27° |
| 26 26° | 27 26° | 28 27° | 29 25° | 30 24° | 31 23° |
You can click on date
Temperatures trend during May in Costa Rica
May weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Moderate or heavy rain shower | 28° /15° | 3.8 mm | 6 | |
| 2 May | Moderate or heavy rain shower | 27° /16° | 8.6 mm | 6 | |
| 3 May | Moderate or heavy rain shower | 29° /14° | 6.5 mm | 6 | |
| 4 May | Heavy rain at times | 28° /16° | 2.8 mm | 6 | |
| 5 May | Cloudy | 28° /16° | 3.4 mm | 6 | |
| 6 May | Overcast | 28° /15° | 1.1 mm | 6 | |
| 7 May | Cloudy | 28° /16° | 2 mm | 6 | |
| 8 May | Overcast | 28° /14° | 3 mm | 6 | |
| 9 May | Patchy rain possible | 27° /14° | 4.6 mm | 6 | |
| 10 May | Patchy rain possible | 28° /15° | 26.2 mm | 6 | |
| 11 May | Moderate or heavy rain shower | 28° /15° | 6.8 mm | 6 | |
| 12 May | Moderate or heavy rain shower | 27° /15° | 14.3 mm | 6 | |
| 13 May | Moderate or heavy rain shower | 26° /15° | 11.9 mm | 6 | |
| 14 May | Moderate or heavy rain shower | 27° /15° | 7.1 mm | 6 | |
| 15 May | Moderate or heavy rain shower | 27° /15° | 12.6 mm | 6 | |
| 16 May | Moderate or heavy rain shower | 25° /15° | 26.4 mm | 6 | |
| 17 May | Heavy rain at times | 26° /16° | 10.1 mm | 6 | |
| 18 May | Heavy rain at times | 28° /15° | 2.3 mm | 6 | |
| 19 May | Patchy rain possible | 27° /16° | 5.4 mm | 6 | |
| 20 May | Overcast | 26° /15° | 9.3 mm | 6 | |
| 21 May | Moderate rain at times | 28° /15° | 5.1 mm | 6 | |
| 22 May | Moderate or heavy rain shower | 27° /16° | 3.9 mm | 6 | |
| 23 May | Patchy rain possible | 28° /15° | 2.7 mm | 6 | |
| 24 May | Moderate or heavy rain shower | 28° /15° | 7.9 mm | 6 | |
| 25 May | Moderate or heavy rain shower | 27° /16° | 5.2 mm | 6 | |
| 26 May | Moderate or heavy rain shower | 26° /15° | 5.8 mm | 6 | |
| 27 May | Moderate or heavy rain shower | 26° /15° | 6.4 mm | 6 | |
| 28 May | Moderate or heavy rain shower | 27° /14° | 8.6 mm | 6 | |
| 29 May | Moderate or heavy rain shower | 25° /16° | 11.9 mm | 6 | |
| 30 May | Moderate or heavy rain shower | 24° /14° | 34.3 mm | 6 | |
| 31 May | Moderate or heavy rain shower | 23° /15° | 31 mm | 5 | |
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Guide for Costa Rica in May
In May, Costa Rica experiences a transition from the dry season to the beginning of the rainy season. At the start of the month, the weather in Costa Rica is generally warm and sunny, with average temperatures ranging from 25° to 30°.
The Pacific coast and central regions tend to be drier and hotter, while the Caribbean coast may experience more rainfall.
As the month progresses, the weather becomes increasingly humid and the likelihood of rain showers rises. By the end of May, the average temperatures range from 24° to 28°, and the country begins to see more frequent afternoon showers and thunderstorms, especially in the afternoons and evenings.
The central valley and Pacific coast may still enjoy some sunny days, but the Caribbean coast and northern regions are likely to experience more consistent rainfall.
Overall, May in Costa Rica offers a mix of warm, sunny days and increasing rainfall, making it a transitional period between the dry and rainy seasons. Travelers should be prepared for changing weather conditions and pack accordingly for both sun and rain.
Costa Rica in May - FAQ
What to pack to Costa Rica in May?
As you prepare for your trip to Costa Rica in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Costa Rica, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
May rainfall patterns in Costa Rica
UV exposure in Costa Rica during May
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