Monthly climate guide

San Miguel weather in December

Expect hot weather in San Miguel in December: afternoons reach about 32°C (89°F), while nights drop to around 21°C (70°F). Around 11 mm of rain falls over the month (very dry), and skies are mostly sunny. Daytime highs are 2°C warmer than November and 2°C cooler than January.

What stands out in December

Rain is well below San Miguel's usual level (around 90% less).
Just 110 km apart, but San Miguel runs about 2°C warmer than San Salvador this month.
Skies are at their clearest this time of year.
It's one of the drier stretches of the year in San Miguel.

Avg high

32°C

89°F

Avg low

21°C

70°F

Rainfall

11 mm

very dry

Humidity

67%

relative

Sky

26%

cloud · mostly sunny

Live San Miguel forecast Where else to go in December

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San Miguel weather by month

Low → high °C Rain (mm)

Show the monthly averages as a table

Average monthly climate in San Miguel
Month	Avg high	Avg low	Rain	Humidity	Cloud cover
January	33°C / 92°F	22°C / 71°F	3 mm	58%	25%
February	35°C / 95°F	23°C / 73°F	3 mm	53%	26%
March	36°C / 96°F	24°C / 74°F	8 mm	51%	29%
April	35°C / 95°F	25°C / 77°F	44 mm	59%	50%
May	32°C / 90°F	25°C / 76°F	183 mm	72%	73%
June	30°C / 87°F	24°C / 75°F	187 mm	78%	77%
July	32°C / 90°F	24°C / 75°F	118 mm	70%	64%
August	32°C / 89°F	24°C / 75°F	187 mm	74%	68%
September	30°C / 86°F	24°C / 74°F	239 mm	81%	77%
October	29°C / 84°F	23°C / 73°F	247 mm	82%	71%
November	30°C / 86°F	22°C / 71°F	51 mm	76%	42%
December	32°C / 89°F	21°C / 70°F	11 mm	67%	26%

What to pack for December

Light, breathable clothing (cotton or linen)
A sun hat and high-SPF sunscreen
A refillable water bottle
Sunglasses

Full season-by-season packing guide →

Is December a good time to visit San Miguel?

Compare the months in the chart above to find your ideal window.

Best time to visit San Miguel →

Other El Salvador cities in December

San Salvador

30° / 23°C · 10 mm

Santa Ana

28° / 18°C · 17 mm

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San Miguel weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/el-salvador/san-miguel/december

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San Miguel in December: quick answers

Is December a good time to visit San Miguel?

Yes. December is one of the best months for San Miguel, with highs around 32°C and about 11 mm of rain.

How warm is San Miguel in December?

Average highs are about 32°C (89°F) and average lows about 21°C (70°F), based on 10 years of daily data.

Does it rain a lot in San Miguel in December?

San Miguel typically gets around 11 mm of rain in December — very dry.

Figures are long-term averages for the area around San Miguel (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.