When to go · Posadas
Posadas in March
Good month. Outside the best window (Apr–Oct). Across Argentina: Good all round: Mendoza harvest festival, Patagonia calmer, Buenos Aires cooling down.
Key facts
- Verdict
- Good
- Temperature
- 31°C (88°F)88°F (31°C) / 20°C (69°F)69°F (20°C)
- average high / low
- Rain days
- 171
- Crowds
- Medium
- Argentina overall
- Prices
- Medium
- Argentina overall
Verdict
Outside the best window (Apr–Oct). Across Argentina: Good all round: Mendoza harvest festival, Patagonia calmer, Buenos Aires cooling down.
Is another month better than March?
March is rated good. These months rate higher:
Weather in March
- PosadasHighs around 31 °C (88 °F), lows around 20.4 °C (69 °F), rain on about 171 daysHighs around 88 °F (31 °C), lows around 69 °F (20.4 °C), rain on about 171 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Semana Santa big impact
Easter (Thu–Fri; 25–26 Mar 2027) · Argentina
Domestic travel peak; buses and flights full.
Crowds and prices
- Crowds · Argentina overall
- Medium
- Prices · Argentina overall
- Medium
Argentina overall: Good all round: Mendoza harvest festival, Patagonia calmer, Buenos Aires cooling down.
Compare two months
Weather, crowds and prices for any two months in Posadas, side by side.
Verdict
Mar: Good
Apr: Great (better)
Daytime high
Mar: 31 °C (88 °F)88 °F (31 °C)
Apr: 28 °C (82 °F)82 °F (28 °C)
Night low
Mar: 20.4 °C (69 °F)69 °F (20.4 °C)
Apr: 17.7 °C (64 °F)64 °F (17.7 °C)
Rain days
Mar: 171 (better)
Apr: 179
Crowds
Mar: Medium
Apr: Medium
Prices
Mar: Medium
Apr: Medium
Festivals listed
Mar: 1
Apr: 1
March: Outside the best window (Apr–Oct). Across Argentina: Good all round: Mendoza harvest festival, Patagonia calmer, Buenos Aires cooling down.
April: Inside Posadas's best window: Apr–Oct.
Posadas: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast