Average annual temperature is 6.6 °C
Absolute maximum temperature: 18.1 °C
Absolute minimum temperature: -5.5 °C
Number of sunny days: 109 days
Number of rainy days: 256 days
Look at detailed online map of Boston
* Weather data for Boston Peru is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.0 | 15.5 | 16.2 | 14.7 | 15.4 | 14.0 | 15.9 | 17.0 | 17.2 | 18.1 | 17.2 | 17.0 |
| Average daytime temperature (°C) | 13.6 | 13.2 | 12.9 | 12.9 | 11.8 | 12.4 | 14.0 | 13.6 | 15.0 | 16.0 | 15.0 | 14.9 |
| Average temperature (°C) | 7.0 | 6.9 | 6.7 | 6.2 | 4.9 | 4.2 | 5.7 | 5.4 | 7.2 | 8.6 | 7.9 | 8.2 |
| Average night temperature (°C) | 2.0 | 2.6 | 2.7 | 0.3 | -1.2 | -3.1 | -1.7 | -1.9 | 0.5 | 3.0 | 2.5 | 3.6 |
| Absolute minimum temperature (°C) | -2.4 | 0.2 | 0.1 | -3.1 | -5.5 | -5.1 | -3.6 | -5.4 | -4.0 | -0.2 | 0.1 | 0.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 13.0 |
| Daylight mean duration (h) | 12.9 | 12.6 | 12.2 | 11.8 | 11.4 | 11.3 | 11.3 | 11.6 | 12.0 | 12.4 | 12.8 | 13.0 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 10.1 | 9.7 | 9.6 | 10.3 | 10.0 | 10.5 | 10.5 | 10.7 | 10.8 | 10.8 | 10.3 | 9.9 |
| Precipitation (mm) | 230 | 272 | 281 | 51 | 45 | 0 | 11 | 15 | 43 | 113 | 183 | 272 |
| Sunny days | 0 | 0 | 0 | 6 | 16 | 29 | 25 | 19 | 8 | 3 | 3 | 0 |
| Rainy days | 31 | 28 | 31 | 24 | 15 | 1 | 6 | 12 | 22 | 28 | 27 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Boston is at