Costa Rica · August
Low seasonCosta Rica · North America
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 28° (82°)24– (75–)29 (84) | 28° (82°)25– (77–)30 (86) | 29° (84°)25– (77–)31 (88) | 29° (84°)25– (77–)31 (88) | 28° (82°)24– (75–)30 (86) | 28° (82°)24– (75–)29 (84) | 27° (81°)24– (75–)29 (84) | 28° (82°)24– (75–)29 (84) | 27° (81°)24– (75–)29 (84) | 27° (81°)23– (73–)29 (84) | 26° (79°)22– (72–)29 (84) | 27° (81°)23– (73–)29 (84) |
Ø night, range from coldest to warmest nightØ nightrange | 19° (66°)16– (61–)21 (70) | 19° (66°)16– (61–)21 (70) | 20° (68°)17– (63–)21 (70) | 20° (68°)17– (63–)22 (72) | 20° (68°)18– (64–)22 (72) | 20° (68°)17– (63–)22 (72) | 20° (68°)17– (63–)21 (70) | 20° (68°)17– (63–)21 (70) | 19° (66°)17– (63–)21 (70) | 19° (66°)17– (63–)21 (70) | 19° (66°)17– (63–)21 (70) | 20° (68°)16– (61–)21 (70) |
☀️Sunshine | 9h | 10h | 9h | 8h | 5h | 5h | 5h | 5h | 4h | 4h | 5h | 7h |
🌊Water Temp | 27° (81°) | 27° (81°) | 28° (82°) | 29° (84°) | 30° (86°) | 29° (84°) | 29° (84°) | 30° (86°) | 30° (86°) | 29° (84°) | 28° (82°) | 28° (82°) |
🌧Rain Days | 0d6mm (0.2") | 1d4mm (0.2") | 1d17mm (0.7") | 6d76mm (3.0") | 13d235mm (9.3") | 15d224mm (8.8") | 11d140mm (5.5") | 13d199mm (7.8") | 17d260mm (10.2") | 18d286mm (11.3") | 11d148mm (5.8") | 3d31mm (1.2") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Off-season — lowest travel prices with still acceptable climate.
August in Costa Rica offers acceptable conditions — but it's not among the top travel months. Those looking for ideal weather should visit in January, February, March, April, and December.
Daytime highs average 28°C (82°F), cooling to 20°C (68°F) at night (daily average: 23°C (73°F)). Peaks reach around 29°C (84°F), the coldest nights around 17°C (63°F). With 5 sunshine hours per day and 13 rain days (199 mm (7.8 in)), this is one of the cloudier months. The water is a warm 30°C (86°F) — perfect for snorkelling and swimming.
A jacket for cool evenings should not be left behind. Sightseeing and excursions can be enjoyed comfortably at this time of year.
Green season: rain every day, the hills turn lush and green, water birds everywhere. Surfers come for the Pacific waves. Lower prices and national parks in fresh green.
Packing list for Costa Rica in August
- T-shirts and shorts
- Swimwear and beach towel
- Sunscreen
- Sunglasses
- Light umbrella or rain poncho
- Insect repellent
- Travel first-aid kit
Frequently Asked Questions
- Is August a good time to visit Costa Rica?
- August is not an optimal month for Costa Rica (Score: 53/100), but it is manageable. For better conditions, consider January, February, March, April, and December.
- How warm is it in Costa Rica in August?
- In August, Costa Rica sees daily highs of 28°C (82°F). Nights cool to 20°C (68°F), with a daily average of 23°C (73°F). Peaks reach around 29°C (84°F), the coldest nights around 17°C (63°F).
- How much rain falls in Costa Rica in August?
- In August, Costa Rica receives an average of 199 mm (7.8 in) of rain over 13 rain days. An umbrella may occasionally be needed.
- How many sunshine hours does Costa Rica get in August?
- Costa Rica averages 5 sunshine hours per day in August — below the annual average.
- How warm is the water in Costa Rica in August?
- Water temperature in Costa Rica in August averages 30°C (86°F) — ideal for swimming and snorkelling.
