Weather in Terceira Island in August 2025
- August is usually the hottest month of the year in Terceira Island;
Average weather
Average temperature in Terceira Island in August
The expected average maximum temperature in August is +21°C with a maximum of +22°C and a minimum of +17°C.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +22°C to +22°C.
Is Terceira Island warm or cold in August?
Terceira Island is typically mild in August.
Maximum temperatures go up compared to the previous month from +19°C to +20°C. The minimum temperature also goes up from +17°C to +18°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is the hottest month in Terceira Island, here is the comparison with other months:
Climate in Terceira Island in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +19°C | +20°C | +19°C | ||||
| Min. temperature | ||||||
| +12°C | +14°C | +12°C | ||||
| Max. temperature | ||||||
| +27°C | +27°C | +26°C | ||||
| Rainfall | ||||||
| 19 mm | 37 mm | 58 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 83% | 81% | 80% | ||||
| Air pressure | ||||||
| 1024 HPa | 1022 HPa | 1020 HPa | ||||
| Sunny days | ||||||
| 3 | 3 | 2 | ||||
| Cloudy days | ||||||
| 18 | 14 | 12 | ||||
| Rainy days | ||||||
| 10 | 13 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August typically has worse weather conditions compared to July. It’s getting warmer as August arrives. The average maximum temperature goes up from +19°C to +20°C during the day. Prepare for more rain. Average rainfall goes from 19 mm to 37 mm. It feels drier, as humidity decreases from 83% to 81%. The average wind speed doesn’t change much during August, staying around 3 m/s. The amount of sunny days stay about the same, averaging 3 sunny days during the month.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Terceira Island is gradually decreasing during August, going from 3 m/s to 1 m/s over the course of the month.
Rain
How was the weather last August in Terceira Island?
Climate Change over Years
The climate in Terceira Island in August has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+14°C) and the highest in 2017 (+18°C). The driest year was 1999 with only 487 mm of rainfall, and the wettest year was 2021 with 1425 mm.
FAQ
Is August a good time to visit Terceira Island?
Can you sunbathe in Terceira Island in August?
Is Terceira Island rainy in August?
Is it sunny in Terceira Island in August?
Other cities in Portugal
Monthly weather in Terceira Island
Source of the data
For this page, we’ve looked at the typical weather in Terceira Island, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.