Climate averages 1991–2020
Merlo weather
in July.
A cool, moderately wet month: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a cool month in Merlo: daytime highs average 14.2°C and nights cool to about 6.0°C. By daytime temperature it is the coolest month of the year.
Expect about 57 mm of rain on roughly 6 days, which makes July a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 04 min on an average July day.
The nearest other city in this atlas is Moreno (7 km away). In July its highs average 14.2°C, about as warm as Merlo, with 57 mm of rain.
Among the 67 cities listed in Argentina, Merlo ranks joint 35th of 67 for the warmest July highs and joint 38th of 67 for the driest July (rainfall, lowest first). The mean July high of those 67 cities is 14.6°C; Merlo is 0.4°C cooler than that mean.
From July to August, average highs rise by 2.5°C to 16.6°C, and monthly rainfall rises from 57 mm to 60 mm.
The annual picture
July 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
Merlo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C19.2°C | 19.2°C | 88 | 7.7 | 14.214 h |
| February | 27.8°C18.4°C | 18.4°C | 94 | 8.3 | 13.413 h |
| March | 25.7°C16.7°C | 16.7°C | 85 | 7.5 | 12.312 h |
| April | 21.8°C13.1°C | 13.1°C | 91 | 8.1 | 11.211 h |
| May | 18.0°C10.0°C | 10.0°C | 62 | 6.2 | 10.310 h |
| June | 15.0°C7.1°C | 7.1°C | 58 | 5.9 | 9.910 h |
| July, selected | 14.2°C6.0°C | 6.0°C | 57 | 6.0 | 10.110 h |
| August | 16.6°C7.4°C | 7.4°C | 60 | 5.8 | 10.811 h |
| September | 18.5°C9.1°C | 9.1°C | 71 | 6.7 | 11.812 h |
| October | 21.3°C11.9°C | 11.9°C | 111 | 9.2 | 12.913 h |
| November | 24.7°C14.6°C | 14.6°C | 92 | 8.4 | 13.914 h |
| December | 27.9°C17.4°C | 17.4°C | 87 | 8.6 | 14.414 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
July in nearby cities
- Moreno in JulyArgentina · 7 kmHigh 14.2°C · Low 6.0°C · 57 mm rain
- Bella Vista in JulyArgentina · 12 kmHigh 14.1°C · Low 6.2°C · 60 mm rain
- Isidro Casanova in JulyArgentina · 13 kmHigh 13.9°C · Low 6.2°C · 60 mm rain
- San Miguel, Argentina in JulyArgentina · 14 kmHigh 14.0°C · Low 6.3°C · 60 mm rain
- Laferrere in JulyArgentina · 16 kmHigh 14.0°C · Low 6.1°C · 60 mm rain
- José C. Paz in JulyArgentina · 17 kmHigh 14.2°C · Low 6.1°C · 60 mm rain
- Don Torcuato in JulyArgentina · 21 kmHigh 13.9°C · Low 6.8°C · 60 mm rain
- Ezeiza in JulyArgentina · 28 kmHigh 13.9°C · Low 6.0°C · 60 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 Merlo) is explained once on the Merlo year overview and on the Sources, method and limits page.
Moreno lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.