Terceira Island Weather: September
 |
Average Day Temperature: | 75.8°F |
|
Average Night Temperature: | 71.2°F |
|
Sea Water Temperature: | 75.4°F |
|
Number of Sunny Days: | 7 days |
| Sunshine Hours: | 11.8 - 13.0 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.7 in | |
| detailed information | ||
forecast
| Terceira Island |
Temperature
| Terceira Island |
Air Temperature in September, °F
The highest day temperature in September 2025 was 76°F. The lowest night temperature was 62°F. The average values for day and night temperatures during September were 71.7°F и 68.0°F respectivly.
Terceira Island Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Terceira Island was 75.2°F. The maximum and minimum values were 73.0°F and 76.8°F respectively.
Most of the days in September are cloudy but you can also expect sunny or gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Terceira Island is 1.7 in. It makes september one of the least rainy months of the year.
The average wind speed in September is 12.0 mph. It makes September one of the most windless months of the year for Terceira Island.
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 Terceira Island in September is 6.5 hours.
Terceira Island on the Weather Map
| Albufeira |  |
+58 |
| Algarve | |
+60 |
| Cascais |  |
+64 |
| Faro | |
+60 |
| Funchal |  |
+52 |
| Lagos | |
+62 |
| Lisbon | |
+62 |
| Madeira | |
+52 |
| Ponta Delgada |  |
+66 |
| Portimao | |
+60 |
| Porto | |
+56 |
| Porto Santo Island |  |
+64 |
| Quarteira | |
+58 |
| Sao Miguel | |
+66 |
| Terceira Island | |
+64 |
| 0900 |  |
64°F | NE 19 mph |
| 1200 |  |
64°F | NE 19 mph |
| 1500 |  |
64°F | NE 22 mph |
| 1800 | |
64°F | NE 21 mph |
| 2100 | |
64°F | NE 24 mph |
| 0000 | |
66°F | NE 27 mph |
| 0300 | |
66°F | NE 27 mph |
| 0600 | |
66°F | NE 29 mph |