Weather in Costa Rica for August 2025
In general, the average temperature in Costa Rica at the beginning of August is 24.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 25.6 °C by the end of August.
Costa Rica experiences an exceptionally high level of rainfall in August, with more than 24 rainy days on average.
Is August 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 August average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  23° | 2 24° | 3  24° | ||||
| 4 26° | 5  26° | 6 25° | 7 22° | 8 25° | 9 24° | 10 25° |
| 11 27° | 12 26° | 13 25° | 14 24° | 15 24° | 16 24° | 17 24° |
| 18 24° | 19 24° | 20 26° | 21 25° | 22 21° | 23 21° | 24 24° |
| 25  26° | 26 24° | 27 25° | 28 26° | 29  26° | 30 26° | 31 26° |
You can click on date
Temperatures trend during August in Costa Rica
August weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Moderate or heavy rain shower | 23° /14° | 47 mm | 5 | |
| 2 Aug. | Moderate or heavy rain shower | 24° /14° | 23 mm | 6 | |
| 3 Aug. | Heavy rain at times | 24° /14° | 17.6 mm | 6 | |
| 4 Aug. | Moderate or heavy rain shower | 26° /14° | 4.4 mm | 6 | |
| 5 Aug. | Overcast | 26° /14° | 3.8 mm | 6 | |
| 6 Aug. | Moderate or heavy rain shower | 25° /13° | 4.6 mm | 6 | |
| 7 Aug. | Moderate or heavy rain shower | 22° /14° | 12 mm | 5 | |
| 8 Aug. | Moderate or heavy rain shower | 25° /14° | 55.7 mm | 6 | |
| 9 Aug. | Moderate or heavy rain shower | 24° /14° | 15.5 mm | 5 | |
| 10 Aug. | Moderate or heavy rain shower | 25° /14° | 3 mm | 6 | |
| 11 Aug. | Moderate or heavy rain shower | 27° /13° | 6.7 mm | 6 | |
| 12 Aug. | Moderate or heavy rain shower | 26° /12° | 8.1 mm | 6 | |
| 13 Aug. | Moderate or heavy rain shower | 25° /14° | 18.9 mm | 6 | |
| 14 Aug. | Moderate or heavy rain shower | 24° /13° | 17 mm | 6 | |
| 15 Aug. | Moderate or heavy rain shower | 24° /14° | 21.6 mm | 5 | |
| 16 Aug. | Heavy rain at times | 24° /14° | 6.8 mm | 6 | |
| 17 Aug. | Moderate or heavy rain shower | 24° /14° | 24.4 mm | 6 | |
| 18 Aug. | Moderate or heavy rain shower | 24° /14° | 12.5 mm | 6 | |
| 19 Aug. | Moderate or heavy rain shower | 24° /14° | 15.7 mm | 6 | |
| 20 Aug. | Moderate or heavy rain shower | 26° /13° | 9.1 mm | 6 | |
| 21 Aug. | Moderate or heavy rain shower | 25° /14° | 8.1 mm | 6 | |
| 22 Aug. | Moderate or heavy rain shower | 21° /14° | 36.2 mm | 5 | |
| 23 Aug. | Moderate or heavy rain shower | 21° /14° | 56.8 mm | 5 | |
| 24 Aug. | Moderate or heavy rain shower | 24° /12° | 25 mm | 6 | |
| 25 Aug. | Torrential rain shower | 26° /12° | 16.4 mm | 6 | |
| 26 Aug. | Torrential rain shower | 24° /12° | 21 mm | 6 | |
| 27 Aug. | Torrential rain shower | 25° /13° | 27 mm | 6 | |
| 28 Aug. | Torrential rain shower | 26° /13° | 40.9 mm | 6 | |
| 29 Aug. | Patchy light rain with thunder | 26° /13° | 11.2 mm | 6 | |
| 30 Aug. | Patchy light rain with thunder | 26° /13° | 9.3 mm | 6 | |
| 31 Aug. | Patchy light rain with thunder | 26° /13° | 30.9 mm | 6 | |
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Guide for Costa Rica in August
In August, Costa Rica experiences varied weather conditions, with differences between the beginning and end of the month. At the start of August, the weather in Costa Rica is characterized by a mix of sunny days and occasional rainfall.
The average temperature in the capital, San Jose, hovers around 22°, with high humidity levels. The Caribbean coast tends to be wetter, with frequent showers and higher humidity, while the Pacific coast enjoys drier and sunnier days, with temperatures averaging around 28°.
Towards the end of August, the weather in Costa Rica begins to transition, with the rainy season starting to taper off in some regions. The central valley and Pacific coast experience a decrease in rainfall, leading to more sunshine and clearer skies.
However, the Caribbean coast may still encounter intermittent showers and higher humidity levels. Temperatures remain relatively consistent, with San Jose seeing average highs of 23° and lows of 17°.
Overall, August in Costa Rica offers a mix of weather patterns, making it essential for travelers to pack for both wet and dry conditions, depending on the specific regions they plan to visit.
Costa Rica in August - FAQ
What to pack to Costa Rica in August?
As you prepare for your trip to Costa Rica in August, 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 August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- 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
August rainfall patterns in Costa Rica
UV exposure in Costa Rica during August
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