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When to go · São Carlos

São Carlos in December

Mixed month. Outside the best window (May–Oct (dry, mild temps)). Across Brazil: Summer rains start; New Year's Eve on Copacabana fills Rio; book everything early.

Key facts

Verdict
Mixed
Temperature
29°C (84°F) / 20°C (68°F)
average high / low
Rain days
14
Crowds
High
Brazil overall
Prices
High
Brazil overall

Verdict

MixedBrazil month rating

Outside the best window (May–Oct (dry, mild temps)). Across Brazil: Summer rains start; New Year's Eve on Copacabana fills Rio; book everything early.

Is another month better than December?

December is rated mixed. These months rate higher:

Weather in December

Long-term averages
  • São CarlosHighs around 29 °C (84 °F), lows around 20 °C (68 °F), rain on about 14 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.

  • Christmas big impact

    25 Dec · Brazil

    Family holiday; summer travel peak starts.

Crowds and prices

Crowds · Brazil overall
High
Prices · Brazil overall
High

Brazil overall: Summer rains start; New Year's Eve on Copacabana fills Rio; book everything early.

High-price month: see what to book ahead.

Compare two months

Weather, crowds and prices for any two months in São Carlos, side by side.

  • Verdict

    Dec: Mixed

    May: Great (better)

  • Daytime high

    Dec: 29 °C (84 °F)

    May: 25 °C (77 °F)

  • Night low

    Dec: 20 °C (68 °F)

    May: 14 °C (57 °F)

  • Rain days

    Dec: 14

    May: 5 (better)

  • Crowds

    Dec: High

    May: Low

  • Prices

    Dec: High

    May: Low

  • Festivals listed

    Dec: 1

    May: 0

December: Outside the best window (May–Oct (dry, mild temps)). Across Brazil: Summer rains start; New Year's Eve on Copacabana fills Rio; book everything early.

May: Inside São Carlos's best window: May–Oct (dry, mild temps).

São Carlos: figures are long-term averages from this guide, not a forecast.

What to pack

  • A rain jacket or umbrella and shoes that dry fast

Build the full packing list for your trip →

Across Brazil in December →