Tamarindo, Costa Rica weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: December – March
What is the weather like in Tamarindo, Costa Rica in August?
In August, Tamarindo, Costa Rica is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 29.0 °C – almost as warm as a bath. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 281 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Tamarindo, Costa Rica.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 68 | 66 | 65 |
| Day | 30° | 30° | 29° |
| Night | 25° | 25° | 25° |
| Sea | 29° | 29° | 29° |
| Sun | 5 h | 5 h | 4 h |
| Rain days | 23 | 26 | 29 |
More details for August
- Daylight
- 12 h 28 min05:34 – 18:02
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or more
- Wind
- 13 km/haverage daily peak
- Cloud cover
- 84 %on average
- Hot days
- 11 days30 °C or more
- Time zone
- UTC−6America/Costa_Rica
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %32 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Tamarindo, Costa Rica in August: quick answers
Is Tamarindo, Costa Rica hot in August?
Yes. In August, Tamarindo, Costa Rica is hot: daytime highs average 30 °C and nights stay around 25 °C. On about 11 days the thermometer climbs to 30 °C or more.
Can you swim in Tamarindo, Costa Rica in August?
Yes. In August the sea averages 29.0 °C – almost as warm as a bath.
Does it rain much in Tamarindo, Costa Rica in August?
It rains often – on about 26 days, adding up to 281 mm.
Tamarindo, Costa Rica month by month
The whole year in Tamarindo, Costa RicaAll destinations: Costa RicaWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)