SeasonMapNosara weather in August
Costa Rica
August in Nosara: sweltering, soaked, with clean air — a gamble, with 30 rainy days.
#8 of 12 months in Nosara · #1033 of 1383 destinations to visit in August · comfort 62/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nosara in August
No notes yet. Open Nosara on the map to add the first one.
Nosara climate normals — August
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 37°C / 99°F | |
| Sea temperature | 30°C / 86°F | ♨️ bath-warm |
| Rainfall | 400 mm / 15.7 in | ⛈ soaked |
| Rainy days | 30 days | |
| Humidity | 89% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 8.8 h/day | |
| Daylight | 12.4 h | |
| Wind | 9 km/h / 6 mph | |
| Air quality (US AQI) | 24 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Nosara in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Nosara's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherNosara's weather peaks January–March, best around February.
Best weatherFair weatherToughest weather
What's on in Nosara in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
South swell season
1 Apr – 31 Oct · usuallySurf seasonSouthern swells run through the middle of the year and Guiones holds them right through the tide, which is why the surf schools never shut. Offshore mornings, onshore by lunch.
- Season
Green season
1 May – 15 Nov · usuallyMonsoonRain in the late afternoon, rates down by a third, and the dirt roads out to Ostional and Samara wanting clearance. The forest is loud again and the howlers are back on the wires at dawn.
- Nature
Arribada at Ostional
1 Jul – 31 Dec · usuallyTurtle nestingBook earlyOstional, ten minutes up the coast, takes mass arrivals of olive ridleys most months from July, usually a few days after the last-quarter moon and heaviest from September to November. You go with a village guide or not at all. Source ↗
- Season
Wet season
MonsoonRisk30 rainy days and about 400 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Nosara — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Nosara?
Nosara in August — FAQ
- Is August a good time to visit Nosara?
- August in Nosara: sweltering, soaked, with clean air — a gamble, with 30 rainy days. It ranks #8 of 12 months for Nosara on SeasonMap's comfort score (62/100).
- What is the weather like in Nosara in August?
- In August, Nosara averages a daily high of 29.7°C and a low of 25.1°C, with about 399.6 mm of rain over roughly 30 rainy days.
- What is the air quality in Nosara in August?
- Nosara has a mean US Air Quality Index of about 24 in August.
Other months in Nosara
Compare Nosara in August
Warmer or cooler than Nosara in August
Similar destinations in Central America — August
Within 300 km: Jacó's Humpback whales around 15 Jul – 15 Nov, and Tortuguero's Green turtle nesting on 1 Jul – 31 Oct.