Climate averages 1991–2020
Gualeguaychú weather
in January.
A hot, wet month: the warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Gualeguaychú: daytime highs average 29.9°C and nights cool to about 20.1°C. By daytime temperature it is the warmest month of the year.
Expect about 110 mm of rain on roughly 8 days, which makes January a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 03 min on an average January day.
The nearest other city in this atlas is Paysandú (87 km away). In January its highs average 30.1°C, about as warm as Gualeguaychú, with 104 mm of rain.
Among the 67 cities listed in Argentina, Gualeguaychú ranks joint 24th of 67 for the warmest January highs and joint 49th of 67 for the driest January (rainfall, lowest first). The mean January high of those 67 cities is 29.0°C; Gualeguaychú is 0.9°C warmer than that mean.
From January to February, average highs fall by 1.6°C to 28.3°C, and monthly rainfall rises from 110 mm to 117 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
Gualeguaychú climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 29.9°C20.1°C | 20.1°C | 110 | 7.7 | 14.114 h |
| February | 28.3°C19.3°C | 19.3°C | 117 | 8.1 | 13.313 h |
| March | 26.4°C17.5°C | 17.5°C | 121 | 8.0 | 12.312 h |
| April | 22.7°C14.2°C | 14.2°C | 130 | 7.9 | 11.311 h |
| May | 18.9°C11.1°C | 11.1°C | 80 | 6.1 | 10.410 h |
| June | 16.2°C8.3°C | 8.3°C | 69 | 6.5 | 10.010 h |
| July | 15.4°C7.2°C | 7.2°C | 64 | 6.0 | 10.210 h |
| August | 17.9°C8.5°C | 8.5°C | 87 | 6.5 | 10.911 h |
| September | 19.7°C10.1°C | 10.1°C | 87 | 7.0 | 11.912 h |
| October | 22.5°C13.1°C | 13.1°C | 124 | 9.8 | 12.913 h |
| November | 25.8°C15.6°C | 15.6°C | 104 | 6.9 | 13.814 h |
| December | 28.6°C18.3°C | 18.3°C | 128 | 8.6 | 14.314 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
- Paysandú in JanuaryUruguay · 87 kmHigh 30.1°C · Low 19.9°C · 104 mm rain
- Zárate in JanuaryArgentina · 130 kmHigh 29.3°C · Low 19.2°C · 95 mm rain
- Campana in JanuaryArgentina · 135 kmHigh 29.3°C · Low 19.0°C · 93 mm rain
- San Nicolás de los Arroyos in JanuaryArgentina · 162 kmHigh 29.7°C · Low 20.3°C · 103 mm rain
- Pilar in JanuaryArgentina · 165 kmHigh 29.1°C · Low 19.0°C · 91 mm rain
- Don Torcuato in JanuaryArgentina · 166 kmHigh 28.4°C · Low 19.7°C · 90 mm rain
- José C. Paz in JanuaryArgentina · 169 kmHigh 29.0°C · Low 19.1°C · 90 mm rain
- San Miguel, Argentina in JanuaryArgentina · 172 kmHigh 28.7°C · Low 19.3°C · 90 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 Gualeguaychú) is explained once on the Gualeguaychú year overview and on the Sources, method and limits page.