Climate averages 1991–2020
Gualeguaychú weather
in May.
A mild, moderately wet month: the 9th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Gualeguaychú: daytime highs average 18.9°C and nights cool to about 11.1°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 80 mm of rain on roughly 6 days, which makes May a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 27 min on an average May day.
The nearest other city in this atlas is Paysandú (87 km away). In May its highs average 19.2°C, about as warm as Gualeguaychú, with 90 mm of rain.
Among the 67 cities listed in Argentina, Gualeguaychú ranks 18th of 67 for the warmest May highs and 58th of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; Gualeguaychú is 0.9°C warmer than that mean.
From May to June, average highs fall by 2.7°C to 16.2°C, and monthly rainfall falls from 80 mm to 69 mm.
The annual picture
May 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 | 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, selected | 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
May in nearby cities
- Paysandú in MayUruguay · 87 kmHigh 19.2°C · Low 11.1°C · 90 mm rain
- Zárate in MayArgentina · 130 kmHigh 18.2°C · Low 10.1°C · 70 mm rain
- Campana in MayArgentina · 135 kmHigh 18.3°C · Low 9.9°C · 68 mm rain
- San Nicolás de los Arroyos in MayArgentina · 162 kmHigh 18.7°C · Low 11.5°C · 66 mm rain
- Pilar in MayArgentina · 165 kmHigh 18.1°C · Low 9.9°C · 66 mm rain
- Don Torcuato in MayArgentina · 166 kmHigh 17.7°C · Low 10.8°C · 65 mm rain
- José C. Paz in MayArgentina · 169 kmHigh 17.9°C · Low 10.0°C · 65 mm rain
- San Miguel, Argentina in MayArgentina · 172 kmHigh 17.8°C · Low 10.3°C · 65 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.