September: 26.4°C highs, 22 mm of rain, only 3.3 rainy days

The first half of June is next best: 28.2°C and 315 hours of sun

May has the most rainy days (7.3) and the most thunderstorms

July and August average 32.1°C and 31.3°C; parts of the city close

October is the wettest month of the year, at 60 mm of rain

January highs of 9.8°C, but dry and bright, with quiet museums

Check San Isidro, Pride and Christmas dates; every month in the guide