Key West in March
In March, Key West averages 24°C (76°F) during the day and 23°C (73°F) at night, with frequent rain — about 14 days of the month see precipitation (34 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
March offers comfortable temperatures in Key West, with some rain to plan around.
How March compares to the rest of the year in Key West
March is in the middle of the year for warmth in Key West (9th of 12) and one of the driest months (10th of 12). Daytime temperature runs 2°C below the annual average (26°C). March runs 1°C warmer than February (24°C) and warms a further 2°C into April (26°C).
March sunrise & sunset in Key West
Times shown for Key West local time (America/New_York), calculated for the 15th of March. They shift by a few minutes day to day across the month.
Photography light in Key West — March
Golden-hour and blue-hour windows for the 15th of March, in Key West's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Key West in March
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on March's tier (High season) and Key West's popularity.
Crowds & pricing — March in Key West
This is a busy month in Key West — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — March in Key West
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Key West — March
Across the year Key West's sea swings from 24.2°C (January) to 31.4°C (August) — March sits at 25.6°C.
Key West in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 23°C / 73°F | 20°C / 69°F | 52 mm | 16 | — |
| February | 24°C / 74°F | 22°C / 71°F | 30 mm | 13 | — |
| March | 24°C / 76°F | 23°C / 73°F | 34 mm | 14 | — |
| April | 26°C / 78°F | 24°C / 76°F | 40 mm | 15 | — |
| May | 27°C / 81°F | 25°C / 78°F | 93 mm | 18 | — |
| June | 29°C / 83°F | 27°C / 80°F | 116 mm | 24 | — |
| July | 30°C / 85°F | 28°C / 82°F | 91 mm | 23 | — |
| August | 30°C / 85°F | 28°C / 82°F | 109 mm | 25 | — |
| September | 29°C / 84°F | 27°C / 81°F | 159 mm | 26 | — |
| October | 28°C / 82°F | 26°C / 79°F | 132 mm | 25 | — |
| November | 26°C / 78°F | 24°C / 75°F | 76 mm | 19 | — |
| December | 24°C / 76°F | 22°C / 72°F | 56 mm | 14 | — |
Other cities with similar March weather
🌍 See the full ranked list of climate twins for Key West in March →
Frequently asked questions
How hot is Key West in March?
In March, Key West averages a high of 24°C (76°F) and a low of 23°C (73°F) — generally warm.
Does it rain a lot in Key West in March?
March can be fairly wet in Key West, with about 14 rainy days on average.
Is March a good time to visit Key West?
March is warm but on the rainy side. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Key West in March?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full March packing list for Key West for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.