Climate averages 1991–2020
Sullana weather
in January.
A hot, fairly dry month: one of the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Sullana: daytime highs average 32.8°C and nights cool to about 21.9°C. By daytime temperature it is one of the warmest months of the year.
Expect about 35 mm of rain on roughly 5 days, which makes January a fairly dry month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average January day.
The nearest other city in this atlas is Piura (31 km away). In January its highs average 32.7°C, about as warm as Sullana, with 37 mm of rain.
Among the 24 cities listed in Peru, Sullana ranks 1st of 24 for the warmest January highs and 11th of 24 for the driest January (rainfall, lowest first). The mean January high of those 24 cities is 25.1°C; Sullana is 7.6°C warmer than that mean.
From January to February, average highs fall by 0.2°C to 32.5°C, and monthly rainfall rises from 35 mm to 75 mm.
The annual picture
January 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
Sullana climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 32.8°C21.9°C | 21.9°C | 35 | 5.2 | 12.412 h |
| February | 32.5°C23.2°C | 23.2°C | 75 | 9.9 | 12.312 h |
| March | 32.8°C23.2°C | 23.2°C | 113 | 11.2 | 12.112 h |
| April | 32.6°C22.0°C | 22.0°C | 42 | 6.5 | 12.012 h |
| May | 31.7°C20.4°C | 20.4°C | 4.9 | 1.8 | 11.912 h |
| June | 29.9°C18.7°C | 18.7°C | 1.8 | 0.8 | 11.812 h |
| July | 28.7°C17.5°C | 17.5°C | 0.6 | 0.2 | 11.912 h |
| August | 28.6°C17.0°C | 17.0°C | 0.2 | 0.1 | 12.012 h |
| September | 29.2°C17.3°C | 17.3°C | 1.3 | 0.4 | 12.112 h |
| October | 29.8°C17.7°C | 17.7°C | 2.5 | 0.9 | 12.212 h |
| November | 30.4°C18.3°C | 18.3°C | 6.9 | 1.8 | 12.312 h |
| December | 31.6°C20.0°C | 20.0°C | 18 | 3.8 | 12.412 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
January in nearby cities
- Piura in JanuaryPeru · 31 kmHigh 32.7°C · Low 22.1°C · 37 mm rain
- Talara in JanuaryPeru · 74 kmHigh 28.4°C · Low 21.9°C · 19 mm rain
- Tumbes in JanuaryPeru · 152 kmHigh 30.0°C · Low 23.2°C · 74 mm rain
- Loja in JanuaryEcuador · 193 kmHigh 20.9°C · Low 14.8°C · 167 mm rain
- Chiclayo in JanuaryPeru · 227 kmHigh 27.6°C · Low 21.4°C · 23 mm rain
- Cuenca in JanuaryEcuador · 292 kmHigh 18.1°C · Low 11.5°C · 146 mm rain
- La Libertad in JanuaryEcuador · 298 kmHigh 26.6°C · Low 22.9°C · 65 mm rain
- Eloy Alfaro in JanuaryEcuador · 318 kmHigh 28.3°C · Low 23.2°C · 308 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 Sullana) is explained once on the Sullana year overview and on the Sources, method and limits page.