Over the MacArthur Causeway to South Beach and back along the bay. The predawn start dodges the heat, but humidity rarely drops below 80%.
By Brett Heimlich, part-time runner.
Plan for about 64°F (18°C) at the 06:00 start, feeling like 61°F (16°C), with 69% humidity and 12 mph wind, warming to roughly 69°F (21°C) by the finish. It rained on 3 of the last 10 race days. Wear: Short Sleeve Tech Shirt, Running Shorts, Running Cap, Waterproof Jacket.
64°F (18°C)
69°F (21°C)
3 of 10 years
40° to 73°F
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Conditions at the 06:00 start on the race's usual date each year (last Sunday of January (occasionally the first Sunday of February)). Years when the race was cancelled or moved still show that date's weather. Source: Open-Meteo ERA5 archive.
| Year | Start temp | Feels like | Finish | Humidity | Wind | Rain | Sky |
|---|---|---|---|---|---|---|---|
| 2025 | 64°F (18°C) | 63°F | 69°F | 70% | 6 mph | – | Overcast |
| 2024 | 73°F (23°C) | 77°F | 78°F | 93% | 11 mph | 0.06 in | Clear |
| 2023 | 73°F (23°C) | 73°F | 77°F | 77% | 14 mph | – | Clear |
| 2022 | 40°F (4°C) | 29°F | 50°F | 46% | 14 mph | – | Clear |
| 2021 | 72°F (22°C) | 68°F | 75°F | 58% | 15 mph | – | Overcast |
| 2020 | 54°F (12°C) | 48°F | 63°F | 74% | 12 mph | – | Clear |
| 2019 | 71°F (22°C) | 70°F | 75°F | 82% | 16 mph | 0.60 in | Drizzle |
| 2018 | 73°F (23°C) | 71°F | 76°F | 77% | 17 mph | – | Mostly clear |
| 2017 | 58°F (14°C) | 49°F | 58°F | 42% | 13 mph | 0.08 in | Drizzle |
| 2016 | 65°F (18°C) | 66°F | 72°F | 70% | 3 mph | – | Mostly clear |
Coldest start: 40°F (4°C) in 2022. Warmest: 73°F (23°C) in 2024. Wettest: 0.60 in in 2019.
Built from the 10-year average start conditions by the same engine as the live tool. Treat optional items as corral-only layers you can shed.
Short Sleeve Tech Shirt
Breathable running tee
Waterproof Jacket
Breathable rain protection
Running Shorts
Lightweight with built-in brief
Running Cap
Keep rain out of eyes
Trail or Waterproof Shoes
Better grip and water resistance
✓ Worn by the author
Fast-drying micromesh tee for warm-weather miles
$75
✓ Worn by the author
Packable, washable running cap with a short brim
$55
The gold standard short sleeve for everyday running
$85
✓ Worn by the author
Thin, ribbed quarter sock that keeps grit out
$36
Water-resistant, reef-safe — non-negotiable for outdoor runs
$16
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Over 2016 to 2025 the start averaged 64°F (18°C) (feels like 61°F (16°C)) with 69% humidity and 12 mph wind, warming to about 69°F (21°C) by the finish. It rained measurably on 3 of those 10 race days. The coldest start was 40°F (4°C) in 2022; the warmest was 73°F (23°C) in 2024.
For a typical 64°F (18°C) start: Short Sleeve Tech Shirt, Running Shorts, Running Cap, Waterproof Jacket. Dress for about 15°F warmer than the start temperature, since the race itself adds that much, and plan to shed anything you only need in the corral.
The Life Time Miami Marathon is usually held on last Sunday of January (occasionally the first Sunday of February). The next expected date is Sunday, January 31, 2027. Confirm on the official site, since dates occasionally move.
The live forecast on this page comes from Open-Meteo and unlocks 16 days before the race. Forecasts inside 7 days are reliable for temperature within a few degrees; rain timing firms up in the last 2 to 3 days. Until then, the 10-year history above is the best planning guide.
Get a what-to-wear call for the live forecast at your exact location, free, no signup.
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