Nova Iguaçu weather in January
In January, Nova Iguaçu has daytime highs averaging 31 °C, nights around 23 °C, with 20 wet days. Figures are 1991–2020 climate normals.
- 31.0°C Average high
- 23.1°C Average low
- 20days Wet days
- 231mm Rainfall
- 13h 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 | 30.8 °C | 22.9 °C | 65 % |
| 11–20 January | 31.1 °C | 23.1 °C | 63 % |
| 21–31 January | 31.2 °C | 23.1 °C | 62 % |
What to expect
| Measure | Typical January | Share of the month |
|---|---|---|
| Days above 25 °C | 29 of 31 | 94 % |
| Days above 30 °C | 20 of 31 | 63 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 20 of 31 | 63 % |
Conditions in January
| Measure | Average |
|---|---|
| Mean temperature | 26 °C |
| Record high (1991–2020) | 39 °C |
| Record low (1991–2020) | 18 °C |
| Relative humidity | 80 % |
| Wind speed | 11 km/h |
| Cloud cover | 72 % |
Where Nova Iguaçu ranks in January
| Ranking | Position | Value |
|---|---|---|
| The warmest places in South America in January | 33rd of 50 | 31 °C |
January compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 31.0 °C | 231 mm | 72 % |
| February | 31.5 °C | 175 mm | 64 % |
| March | 29.9 °C | 184 mm | 65 % |
| November | 28.5 °C | 175 mm | 74 % |
| December | 30.1 °C | 197 mm | 72 % |
See all twelve months for Nova Iguaçu
- January is the 2nd warmest month here.
- It is the 12th driest month of the year.
- It ranks 10th for least cloud cover.
- Days last about 13 hours from sunrise to sunset.
- It rains on 20 of 31 days — 63 % of the month.
- Nights are about 8.0 °C cooler than the middle of the day.
- The hottest January day on record since 1991 reached 39 °C, 8.4 °C above the usual daytime high.
QuestionsJanuary in Nova Iguaçu, answered
How warm is Nova Iguaçu in January?
Daily highs average 31 °C and nights fall to about 23 °C, a spread of 8.0 °C between afternoon and dawn. That makes January the 2nd warmest month of the year here.
Does it rain much in Nova Iguaçu in January?
January averages 231 mm of rain, spread over about 20 of the 31 days — 63 % of the month. Cloud cover averages 72 % of the sky.
How long are the days in January?
Nova Iguaçu averages 13 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.