Climate averages 1991–2020
San Juan, Peru weather
in March.
A hot, very wet month: the joint 5th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a hot month in San Juan, Peru: daytime highs average 29.9°C and nights cool to about 23.5°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 304 mm of rain on roughly 28 days, which makes March a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 08 min on an average March day.
The nearest other city in this atlas is Iquitos (4 km away). In March its highs average 29.8°C, about as warm as San Juan, Peru, with 304 mm of rain.
Among the 24 cities listed in Peru, San Juan, Peru ranks 3rd of 24 for the warmest March highs and joint 22nd of 24 for the driest March (rainfall, lowest first). The mean March high of those 24 cities is 25.3°C; San Juan, Peru is 4.5°C warmer than that mean.
From March to April, average highs fall by 0.5°C to 29.4°C, and monthly rainfall falls from 304 mm to 294 mm.
The annual picture
March in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San Juan, Peru climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.0°C23.4°C | 23.4°C | 252 | 25.9 | 12.312 h |
| February | 30.0°C23.5°C | 23.5°C | 235 | 24.7 | 12.212 h |
| March, selected | 29.9°C23.5°C | 23.5°C | 304 | 28.4 | 12.112 h |
| April | 29.4°C23.3°C | 23.3°C | 294 | 27.3 | 12.012 h |
| May | 28.8°C22.9°C | 22.9°C | 271 | 26.7 | 11.912 h |
| June | 28.2°C22.4°C | 22.4°C | 218 | 25.0 | 11.912 h |
| July | 28.3°C22.1°C | 22.1°C | 165 | 23.3 | 11.912 h |
| August | 29.4°C22.5°C | 22.5°C | 154 | 21.8 | 12.012 h |
| September | 30.1°C23.1°C | 23.1°C | 179 | 23.5 | 12.112 h |
| October | 30.3°C23.5°C | 23.5°C | 201 | 25.8 | 12.212 h |
| November | 29.9°C23.5°C | 23.5°C | 235 | 25.8 | 12.312 h |
| December | 29.9°C23.4°C | 23.4°C | 263 | 27.2 | 12.312 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Iquitos in MarchPeru · 4 kmHigh 29.8°C · Low 23.4°C · 304 mm rain
- Cruzeiro do Sul in MarchBrazil · 433 kmHigh 29.4°C · Low 22.7°C · 282 mm rain
- Pucallpa in MarchPeru · 531 kmHigh 29.5°C · Low 23.2°C · 350 mm rain
- Cuenca in MarchEcuador · 642 kmHigh 18.1°C · Low 11.6°C · 183 mm rain
- Florencia in MarchColombia · 653 kmHigh 27.5°C · Low 18.9°C · 193 mm rain
- Loja in MarchEcuador · 658 kmHigh 20.8°C · Low 14.9°C · 204 mm rain
- Pitalito in MarchColombia · 698 kmHigh 23.3°C · Low 15.3°C · 315 mm rain
- Ipiales in MarchColombia · 705 kmHigh 16.3°C · Low 9.6°C · 251 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for San Juan) is explained once on the San Juan, Peru year overview and on the Sources, method and limits page.
Iquitos lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.