Weather in Miami in January

Prime time. If you get to pick your dates, January is the one. Highs average 22.7 °C, lows 19.5 °C, and rain falls on 7 days — nothing in the month is working against you.

January is the highest-scoring month of the twelve. The nearest rival is February, and the month at the other end of the year is August.

Rain on 7 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average January reaches 30 °C; the day barely swings — 3.2 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest January day reached 26.9 °C and the coldest night fell to 5.9 °C, and the wettest single day dropped 34 mm — roughly 77% of the month's rain in one day.

January is moderately variable: 13 mm in the driest year against 156 mm in the wettest, around an average of 44 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind sits around 16.9 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How January sits in the year

This is a turning point in the year — December and February sit on opposite sides of it, so the month contains the change rather than following it.

Daylight in January

January sits at the dark end of Miami's year — 10.7 hours of daylight against 13.7 at midsummer, gaining 0.4 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 25.1 °C in January — warm enough to stay in as long as you like. The sea peaks at 29.7 °C in August and bottoms out at 24.9 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

January in Miami versus nearby

If Miami is one option among several, the nearby comparison is worth making. Cape Coral is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Key West is close enough to be a coin toss — within a degree on temperature, 2 days less rain.

So: January is the answer for Miami. If it is booked out or priced out, February is the next best thing at 1 points behind, and August is the month to keep off the shortlist.

Every month in Miami

See all twelve months in Miami, or where else to go in January.