The highest day temperature in August 2026 was 97°F. The lowest night temperature was 78°F. The average values for day and night temperatures during August were 92.5°F и 80.5°F respectivly.

The average sea surface temperature in August 2026 for Tamarindo was 90.1°F. The maximum and minimum values were 89.2°F and 91.2°F respectively.

Most of the days in August are gloomy but you can also expect sunny days.

Precipitation total in August for Tamarindo is 5.5 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 5.1 mph. It makes August one of the most windless months of the year for Tamarindo.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Tamarindo in August is 5.3 hours.