Sullana weather in January
In January, Sullana has daytime highs averaging 33 °C, nights around 22 °C, with 4.8 wet days. Figures are 1991–2020 climate normals.
- 32.8°C Average high
- 22.0°C Average low
- 4.8days Wet days
- 36mm Rainfall
- 12h Daylight
Daily temperatures through January
How January develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 January | 32.7 °C | 21.5 °C | 11 % |
| 11–20 January | 32.7 °C | 21.9 °C | 16 % |
| 21–31 January | 33.0 °C | 22.4 °C | 19 % |
- Rain is most likely over days 21–31 of January (19 % of days) and least likely over days 1–10 (11 %).
What to expect
| Measure | Typical January | Share of the month |
|---|---|---|
| Days above 25 °C | 31 of 31 | 100 % |
| Days above 30 °C | 29 of 31 | 94 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 4.8 of 31 | 16 % |
Conditions in January
| Measure | Average |
|---|---|
| Mean temperature | 26 °C |
| Record high (1991–2020) | 37 °C |
| Record low (1991–2020) | 18 °C |
| Relative humidity | 65 % |
| Wind speed | 20 km/h |
| Cloud cover | 72 % |
Where Sullana ranks in January
| Ranking | Position | Value |
|---|---|---|
| The warmest places in South America in January | 4thof 50 | 33 °C |
January compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 32.8 °C | 36 mm | 72 % |
| February | 32.5 °C | 80 mm | 83 % |
| March | 32.8 °C | 119 mm | 83 % |
| November | 30.5 °C | 7 mm | 67 % |
| December | 31.7 °C | 17 mm | 66 % |
See all twelve months for Sullana
- January is the 2nd warmest month here.
- It is the 9th driest month of the year.
- It ranks 10th for least cloud cover.
- Days last about 12 hours from sunrise to sunset.
- It rains on 4.8 of 31 days — 16 % of the month.
- Nights are about 11 °C cooler than the middle of the day.
- The hottest January day on record since 1991 reached 37 °C, 3.7 °C above the usual daytime high.
Nearby destinations in January
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Sullana | 33 °C | 4.8 | – |
| Piura | 33 °C | 5 | – |
| Loja | 21 °C | 22 | – |
| Machala | 26 °C | 25 | 26 |
| Chiclayo | 28 °C | 4 | 20 |
| Cuenca | 18 °C | 23 | – |
| Guayaquil | 28 °C | 22 | – |
| Eloy Alfaro | 28 °C | 25 | – |
QuestionsJanuary in Sullana, answered
How warm is Sullana in January?
Daily highs average 33 °C and nights fall to about 22 °C, a spread of 11 °C between afternoon and dawn. That makes January the 4th warmest month of the year here.
Does it rain much in Sullana in January?
January averages 36 mm of rain, spread over about 5 of the 31 days — 16 % of the month. Cloud cover averages 72 % of the sky.
How long are the days in January?
Sullana averages 12 hours between sunrise and sunset in January. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.