Average temperature in August is 22.4 °C
Average daytime temperature is 29.1 °C
Average night temperature is 17 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: 11.9 °C
Number of sunny days: 15
Number of rainy days: 16
Number of snow days:
Precipitation sum: 40 mm
* Weather data for Hyannis United States is based on climate observations for 2023 year
| August (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 28.6 | 28.8 | 26.3 | 29.2 | 27.2 | 23.1 | 22.1 | 24.5 | 24.3 | 28.6 | 28.6 | 28.3 | 24.3 | 22.5 | 29.2 | 35.1 | 30.8 | 34.6 | 31.5 | 31.8 | 36.6 | 36.1 | 34.8 | 33.8 | 31.3 | 24.5 | 29 | 28.3 | 27.9 | 30 | 31.7 |
| Apparent max temperature | 29.9 | 33 | 28 | 29 | 26 | 21.2 | 20.9 | 25.8 | 25.8 | 28 | 30.1 | 28.9 | 24.2 | 21.1 | 28.3 | 35.2 | 29.2 | 35 | 30.8 | 31.3 | 33.9 | 34.3 | 35.3 | 35.3 | 30 | 24.4 | 29.8 | 28.3 | 27.2 | 26.8 | 31.2 |
| Mean temperature | 23.9 | 24 | 21.8 | 22.4 | 20.7 | 17.9 | 17.2 | 17.8 | 18.4 | 21.1 | 21.9 | 21 | 19.4 | 16.6 | 19.2 | 25.1 | 22.2 | 24.9 | 27.4 | 23.2 | 28.2 | 29.6 | 29.2 | 27.3 | 23.9 | 18.8 | 20.6 | 21.8 | 20.8 | 22.3 | 24.7 |
| Apparent mean temperature | 21.9 | 19.9 | 20.8 | 19 | 15.8 | 10.8 | 11.3 | 13.3 | 13.1 | 14.9 | 14 | 15.3 | 13.4 | 8.7 | 10.4 | 16.7 | 14.4 | 16.5 | 20.6 | 15.6 | 19.4 | 20.8 | 21.1 | 20.6 | 19 | 11.6 | 12.2 | 15.8 | 13 | 13.6 | 15.3 |
| Minimum temperature | 19.3 | 18.9 | 18.3 | 18 | 16.6 | 14.5 | 12.4 | 13.1 | 13.9 | 16.4 | 14.3 | 16.7 | 15.7 | 11.9 | 12.2 | 18.4 | 15.2 | 19.1 | 23.1 | 16.5 | 21.8 | 23.9 | 23.9 | 20.8 | 19.9 | 12.6 | 13.6 | 17.1 | 14.5 | 16 | 18.1 |
| Apparent min temperature | 25.8 | 25.6 | 23.7 | 22.9 | 19.8 | 14.7 | 16.2 | 17.9 | 18.5 | 20.3 | 22.1 | 20.6 | 17.6 | 13.7 | 17.9 | 23.9 | 21.5 | 23.4 | 25.7 | 22.9 | 26 | 26.7 | 27.3 | 27.7 | 23 | 17.8 | 19.6 | 21.5 | 19.6 | 20 | 21.9 |
| August | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 14.4 | 14.4 | 14.4 | 14.3 | 14.3 | 14.3 | 14.2 | 14.2 | 14.1 | 14.1 | 14.1 | 14 | 14 | 13.9 | 13.9 | 13.9 | 13.8 | 13.8 | 13.7 | 13.7 | 13.6 | 13.6 | 13.6 | 13.5 | 13.5 | 13.4 | 13.4 | 13.3 | 13.3 | 13.2 | 13.2 |
| Sunshine duration (h) | 10.3 | 12.1 | 10.8 | 13.4 | 12.3 | 12.9 | 10 | 10 | 10.7 | 13.2 | 13 | 11.7 | 10.7 | 12.9 | 12.9 | 12.8 | 12.7 | 12.7 | 12.5 | 8.3 | 12.6 | 12.5 | 12.5 | 12.5 | 7.2 | 11.4 | 11.6 | 8.6 | 12.3 | 12.3 | 12.2 |
| Precipitation (mm) | 5.2 | 2.1 | 3.9 | 0.4 | 2.4 | 0.6 | 2.5 | 0.2 | 1.7 | 0.4 | 0 | 9.6 | 0.1 | 0 | 0 | 0 | 0 | 0.4 | 0 | 0.1 | 0 | 0 | 0 | 0 | 3.5 | 0 | 0 | 6.6 | 0 | 0 | 0 |
| Precipitation hours | 5 | 2 | 8 | 2 | 6 | 5 | 4 | 2 | 5 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 7 | 0 | 0 | 0 |
| Wind speed (m/s) | 16.8 | 16.1 | 18.4 | 27.2 | 33.5 | 33.2 | 19.1 | 18.6 | 18.8 | 24.1 | 15.3 | 23.2 | 32.3 | 26.6 | 15.5 | 22.7 | 22.9 | 29.1 | 28.5 | 27.5 | 27.2 | 28.9 | 23.5 | 18.5 | 27 | 14.7 | 17.9 | 23 | 13.7 | 31.7 | 32.1 |
In August 2023, the highest daytime temperature in Hyannis was 36.6°C.
While the minimum temperature at night dropped to 11.9°C.
The average nighttime and daytime temperatures during August in Hyannis are 17°C and 29.1°C respectively.
The precipitation sum in August is about 40 mm.