Average annual temperature is 1.9 °C
Absolute maximum temperature: 12.4 °C
Absolute minimum temperature: -11.8 °C
Number of sunny days: 79 days
Number of rainy days: 250 days
Number of snow days: 36 days
Look at detailed online map of Cayena
* Weather data for Cayena 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) | 10.3 | 9.7 | 10.2 | 10.0 | 9.9 | 9.3 | 12.3 | 12.1 | 10.9 | 12.1 | 12.0 | 12.4 |
| Average daytime temperature (°C) | 7.4 | 7.1 | 6.6 | 7.6 | 6.4 | 7.5 | 9.5 | 8.6 | 8.8 | 9.5 | 8.8 | 9.2 |
| Average temperature (°C) | 1.9 | 2.1 | 1.7 | 1.2 | 0.4 | 0.2 | 1.5 | 1.3 | 2.0 | 3.2 | 3.2 | 3.6 |
| Average night temperature (°C) | -2.6 | -2.0 | -2.6 | -4.1 | -5.1 | -5.9 | -4.6 | -4.8 | -3.6 | -2.0 | -1.2 | -0.3 |
| Absolute minimum temperature (°C) | -7.5 | -5.4 | -6.3 | -7.3 | -11.8 | -8.5 | -6.3 | -7.8 | -6.8 | -4.7 | -3.2 | -3.1 |
| 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 | 12.0 |
| Daylight mean duration (h) | 12.8 | 12.5 | 12.2 | 11.8 | 11.5 | 11.3 | 11.4 | 11.7 | 12.0 | 12.4 | 12.8 | 12.9 |
| 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) | 9.8 | 9.1 | 9.3 | 9.7 | 10.0 | 10.5 | 10.6 | 10.7 | 10.8 | 10.6 | 9.7 | 9.5 |
| Precipitation (mm) | 165 | 213 | 176 | 79 | 48 | 1 | 10 | 20 | 82 | 125 | 216 | 251 |
| Sunny days | 2 | 0 | 0 | 3 | 11 | 23 | 20 | 15 | 4 | 1 | 0 | 0 |
| Rainy days | 28 | 28 | 30 | 25 | 16 | 2 | 2 | 6 | 23 | 30 | 29 | 31 |
| Snow days | 1 | 0 | 1 | 2 | 4 | 5 | 9 | 10 | 3 | 0 | 1 | 0 |
The largest precipitation sum in Cayena is at