Climate averages 1991–2020
Rosario weather
in April.
A warm, wet month: the 7th warmest and the 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in Rosario: daytime highs average 22.7°C and nights cool to about 14.1°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 103 mm of rain on roughly 8 days, which makes April a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 18 min on an average April day.
The nearest other city in this atlas is Gobernador Gálvez (9 km away). In April its highs average 22.6°C, about as warm as Rosario, with 103 mm of rain.
Among the 67 cities listed in Argentina, Rosario ranks joint 17th of 67 for the warmest April highs and joint 51st of 67 for the driest April (rainfall, lowest first). The mean April high of those 67 cities is 21.8°C; Rosario is 0.9°C warmer than that mean.
From April to May, average highs fall by 3.8°C to 18.8°C, and monthly rainfall falls from 103 mm to 66 mm.
The annual picture
April 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
Rosario climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.0°C20.1°C | 20.1°C | 102 | 8.1 | 14.114 h |
| February | 28.4°C19.3°C | 19.3°C | 113 | 8.5 | 13.313 h |
| March | 26.6°C17.5°C | 17.5°C | 126 | 7.6 | 12.312 h |
| April, selected | 22.7°C14.1°C | 14.1°C | 103 | 7.9 | 11.311 h |
| May | 18.8°C11.1°C | 11.1°C | 66 | 6.0 | 10.510 h |
| June | 16.0°C8.1°C | 8.1°C | 40 | 4.6 | 10.010 h |
| July | 15.4°C6.9°C | 6.9°C | 36 | 5.0 | 10.210 h |
| August | 18.1°C8.1°C | 8.1°C | 53 | 4.6 | 10.911 h |
| September | 20.4°C10.1°C | 10.1°C | 61 | 5.8 | 11.912 h |
| October | 23.2°C13.1°C | 13.1°C | 111 | 9.7 | 12.913 h |
| November | 26.3°C15.8°C | 15.8°C | 115 | 8.3 | 13.814 h |
| December | 28.8°C18.5°C | 18.5°C | 104 | 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
April in nearby cities
- Gobernador Gálvez in AprilArgentina · 9 kmHigh 22.6°C · Low 14.3°C · 103 mm rain
- San Nicolás de los Arroyos in AprilArgentina · 59 kmHigh 22.4°C · Low 14.5°C · 106 mm rain
- Pergamino in AprilArgentina · 105 kmHigh 22.2°C · Low 13.1°C · 97 mm rain
- Paraná in AprilArgentina · 135 kmHigh 22.9°C · Low 15.1°C · 113 mm rain
- Santa Fe in AprilArgentina · 144 kmHigh 23.3°C · Low 15.4°C · 114 mm rain
- Venado Tuerto in AprilArgentina · 152 kmHigh 22.3°C · Low 13.3°C · 87 mm rain
- Junín in AprilArgentina · 185 kmHigh 21.9°C · Low 12.8°C · 90 mm rain
- Zárate in AprilArgentina · 197 kmHigh 22.0°C · Low 13.1°C · 103 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 Rosario) is explained once on the Rosario year overview and on the Sources, method and limits page.
Gobernador Gálvez lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.