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January Weather in Miami, United States

Last updated: June 24, 2025

In Miami, United States, the average temperature in January hovers around 3°C (37°F). The climate can be quite variable, with minimum temperatures plunging to -17°C (3°F) and peaking at a warm 26°C (79°F). Expect some moisture, as the area receives about 21 mm (0.8 in) of precipitation over 3 days. With an average humidity of 75%, it's a good idea to keep a light jacket handy!

January Temperature in Miami

In January in Miami, the average temperature is 3°C (37°F). Maximum temperatures can reach up to 26°C (79°F), while the minimum can drop as low as -17°C (3°F). These temperature fluctuations suggest that travelers should pack layers to comfortably adapt to both warm and cold conditions.

January Weather in Miami: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Miami, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Miami, January typically has an average temperature of 3°C (37°F), with highs reaching up to 26°C (79°F) and lows dropping to around -17°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec373850576777807872584841
Data source: Temperature data for Miami generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Miami

In Miami in January, the precipitation amount is 21 mm (0.8 in) over a period of 3 days.

January Precipitation Trends in Miami

The chart displays monthly precipitation patterns in Miami, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Miami, January typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec211345407348436648611420
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Miami

In Miami in January, humidity is 75%. With an average temperature of 3°C (37°F), this humidity feels like a chilly damp embrace, making travel seem quite uncomfortable as the cold penetrates through clothing, leaving you feeling clammy and heavy rather than refreshed.

January Average Humidity in Miami

This chart illustrates the average monthly humidity levels in Miami, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Miami is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Miami

In Miami in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Miami for better planning.

Maximum UV Index Levels in Miami for January

The chart shows the monthly maximum UV Index (UVI) for Miami in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Miami typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Miami January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Miami Compares to Other Months

Weather in Miami varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Miami, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Miami, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)21 mm (0.8 inches)75%moderate
February Weather3°C (38°F)13 mm (0.5 inches)76%high
March Weather10°C (50°F)45 mm (1.8 inches)64%very high
April Weather14°C (57°F)40 mm (1.6 inches)70%very high
May Weather19°C (67°F)73 mm (2.9 inches)78%extreme
June Weather25°C (77°F)48 mm (1.9 inches)81%extreme
July Weather27°C (80°F)43 mm (1.7 inches)82%extreme
August Weather26°C (79°F)66 mm (2.6 inches)78%extreme
September Weather22°C (73°F)48 mm (1.9 inches)72%very high
October Weather14°C (58°F)61 mm (2.4 inches)73%high
November Weather9°C (48°F)14 mm (0.5 inches)80%moderate
December Weather5°C (41°F)20 mm (0.8 inches)81%moderate

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