Cities / United States / Florida

30°

⛅ Key Biscayne weather

Partly cloudy. .

Feels like 35° Wind 22 km/h E Humidity 80% Pressure 1017 hPa UV 0 Air Good ☀ 06:53 - 19:57
⚠ Heat Advisory · Moderate

Heat Advisory issued August 13 at 1:42AM EDT until August 13 at 7:00PM EDT by NWS Miami FL

Right now it is 30° in Key Biscayne with partly cloudy skies, it feels more like 35° and today's high is 30° with an overnight low of 27°. The sun rises at 06:53 and sets at 19:57, giving 13h 04m of daylight. Over the coming week highs range from 29° to 30° - a steady stretch with little day-to-day change.

Key Biscayne is in Florida, United States, sitting 1 m above sea level, with a population of about 13,000. Local time is America/New_York (UTC−4), and every time on this page is shown in it.

Next 24 hours - temperature

29° 31° 33° 30° 29° 16:00 · 29.9° · 0 mm 17:00 · 30° · 0 mm 18:00 · 29.9° · 0 mm 19:00 · 29.9° · 0 mm 20:00 · 29.7° · 0 mm 21:00 · 29.7° · 0 mm 22:00 · 29.7° · 0 mm 23:00 · 29.7° · 0 mm 00:00 · 29.5° · 0 mm 01:00 · 29.5° · 0 mm 02:00 · 29.4° · 0 mm 03:00 · 29.4° · 0 mm 04:00 · 29.7° · 0 mm 05:00 · 29.8° · 0 mm 06:00 · 29.8° · 0 mm 07:00 · 29.7° · 0 mm 08:00 · 29.7° · 0 mm 09:00 · 29.6° · 0 mm 10:00 · 29.6° · 0 mm 11:00 · 29.7° · 0 mm 12:00 · 29.8° · 0 mm 13:00 · 29.7° · 0 mm 14:00 · 29.8° · 0 mm 15:00 · 29.2° · 0 mm

Precipitation

16:00 · 0 mm 16:00 17:00 · 0 mm 18:00 · 0 mm 19:00 · 0 mm 19:00 20:00 · 0 mm 21:00 · 0 mm 22:00 · 0 mm 22:00 23:00 · 0 mm 00:00 · 0 mm 01:00 · 0 mm 01:00 02:00 · 0 mm 03:00 · 0 mm 04:00 · 0 mm 04:00 05:00 · 0 mm 06:00 · 0 mm 07:00 · 0 mm 07:00 08:00 · 0 mm 09:00 · 0 mm 10:00 · 0 mm 10:00 11:00 · 0 mm 12:00 · 0 mm 13:00 · 0 mm 13:00 14:00 · 0 mm 15:00 · 0 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
16:00 ⛅ 29.9° 32.7° - Partly cloudy
17:00 ☁️ 30° 34.7° - Overcast
18:00 🌤️ 29.9° 34.5° - Mostly clear
19:00 ☀️ 29.9° 34.1° - Clear sky
20:00 ⛅ 29.7° 34° - Partly cloudy
21:00 ☀️ 29.7° 34.3° - Clear sky
22:00 ☀️ 29.7° 33.8° - Clear sky
23:00 ☀️ 29.7° 33.8° - Clear sky
00:00 ☀️ 29.5° 33.5° - Clear sky
01:00 ☀️ 29.5° 33° - Clear sky
02:00 ⛅ 29.4° 32.7° - Partly cloudy
03:00 ☀️ 29.4° 32.9° - Clear sky

Next 16 days

Today☀️ 30°27° Fri 14☁️ 30°29° Sat 15🌦️ 30°28°1.2mm Sun 16☀️ 29°29° Mon 17🌧️ 30°27°2.5mm Tue 18🌦️ 30°28°2.7mm Wed 19⛅ 30°29°0.6mm Thu 20🌤️ 29°29°0.3mm Fri 21🌤️ 30°29°0.3mm Sat 22⛅ 30°29° Sun 23🌦️ 29°29°2.4mm Mon 24🌦️ 30°29°4.8mm Tue 25🌧️ 29°28°12mm Wed 26🌧️ 29°29°7.5mm Thu 27🌧️ 30°29°10.5mm Fri 28🌦️ 29°28°2.7mm
☀️ TodayAugust 13th Avg 29° Low 27° at 04:00 High 30° at 12:00 Feels 36° Wind ~22 km/h
Cloudy Cloudy Clear Clear
00:00 28°
02:00 29°
04:00 27°
06:00 29°
08:00 29°
10:00 30°
12:00 30°
14:00 30°
16:00 30°
18:00 30°
20:00 30°
22:00 30°
☁️ FridayAugust 14th Avg 29° Low 29° at 18:00 High 30° at 05:00 Feels 34° Wind ~22 km/h
Clear Clear Cloudy Cloudy
00:00 30°
02:00 29°
04:00 30°
06:00 30°
08:00 30°
10:00 30°
12:00 30°
14:00 30°
16:00 30°
18:00 29°
20:00 29°
22:00 29°
🌦️ SaturdayAugust 15th Avg 29° Low 28° at 10:00 High 30° at 17:00 1.2 mm rain Feels 33° Wind ~29 km/h
Cloudy Clear
00:00 29°
02:00 29°
04:00 29°
06:00 29°
08:00 29°
10:00 28° 0.7mm
12:00 29°
14:00 29° 0.1mm
16:00 30°
18:00 30°
20:00 30°
22:00 29°
☀️ SundayAugust 16th Avg 29° Low 29° at 07:00 High 29° at 01:00 Feels 33° Wind ~24 km/h
Clear Clear
00:00 29°
02:00 29°
04:00 29°
06:00 29°
08:00 29°
10:00 29°
12:00 29°
14:00 29°
16:00 29°
18:00 29°
20:00 29°
22:00 29°
🌧️ MondayAugust 17th Avg 29° Low 27° at 20:00 High 30° at 11:00 2.5 mm rain Feels 34° Wind ~29 km/h
Clear Rain Clear
00:00 29°
02:00 29°
04:00 29°
06:00 29°
08:00 29°
10:00 30°
12:00 30°
14:00 29°
16:00 29°
18:00 29° 0.8mm
20:00 27° 0.7mm
22:00 28°
🌦️ TuesdayAugust 18th Avg 29° Low 28° at 00:00 High 30° at 11:00 2.7 mm rain Feels 34° Wind ~20 km/h
Clear Rain
00:00 28°
02:00 29°
04:00 29°
06:00 29°
08:00 29°
10:00 30°
12:00 30°
14:00 29°
16:00 29°
18:00 29° 0.8mm
20:00 29° 0.8mm
22:00 29° 0.1mm
⛅ WednesdayAugust 19th Avg 29° Low 29° at 07:00 High 30° at 20:00 0.6 mm rain Feels 33° Wind ~27 km/h
Clear Partly Cloudy Rain Clear
00:00 29°
02:00 29°
04:00 29°
06:00 29°
08:00 29°
10:00 29°
12:00 29°
14:00 29°
16:00 29° 0.1mm
18:00 29° 0.1mm
20:00 30° 0.1mm
22:00 29°
🌤️ ThursdayAugust 20th Avg 29° Low 29° at 03:00 High 29° at 17:00 0.3 mm rain Feels 32° Wind ~20 km/h
Rain Partly Cloudy Clear Partly Cloudy
00:00 29° 0.1mm
02:00 29° 0.1mm
04:00 29°
06:00 29°
08:00 29°
10:00 29°
12:00 29°
14:00 29°
16:00 29°
18:00 29°
20:00 29°
22:00 29°
🌤️ FridayAugust 21st Avg 29° Low 29° at 05:00 High 30° at 11:00 0.3 mm rain Feels 32° Wind ~22 km/h
Clear Rain Clear
00:00 29°
02:00 29°
04:00 29° 0.1mm
06:00 29°
08:00 29°
10:00 29°
12:00 29°
14:00 29°
16:00 29°
18:00 30°
20:00 30°
22:00 29°
⛅ SaturdayAugust 22nd Avg 29° Low 29° at 07:00 High 30° at 17:00 Feels 32° Wind ~24 km/h
Clear Clear Cloudy Partly Cloudy Clear
00:00 29°
02:00 29°
04:00 29°
06:00 29°
08:00 29°
10:00 29°
12:00 29°
14:00 29°
16:00 30°
18:00 30°
20:00 30°
22:00 29°
🌦️ SundayAugust 23rd Avg 29° Low 29° at 06:00 High 29° at 00:00 2.4 mm rain Feels 32° Wind ~26 km/h
Rain Clear Rain Rain
00:00 29° 0.2mm
02:00 29° 0.2mm
04:00 29°
06:00 29°
08:00 29°
10:00 29°
12:00 29° 0.1mm
14:00 29° 0.1mm
16:00 29° 0.2mm
18:00 29°
20:00 29°
22:00 29° 0.3mm
🌦️ MondayAugust 24th Avg 29° Low 29° at 14:00 High 30° at 17:00 4.8 mm rain Wind ~30 km/h
Rain Partly Cloudy Rain
00:00 29° 0.6mm
02:00 29° 0.6mm
04:00 29°
06:00 29°
08:00 29°
10:00 29°
12:00 29° 0.3mm
14:00 29° 0.3mm
16:00 29° 0.3mm
18:00 30° 0.1mm
20:00 29° 0.1mm
22:00 29° 0.3mm
🌧️ TuesdayAugust 25th Avg 29° Low 28° at 17:00 High 29° at 01:00 12 mm rain Feels 32° Wind ~23 km/h
Rain Cloudy Rain Cloudy
00:00 29° 0.1mm
02:00 29° 0.1mm
04:00 29° 0.9mm
06:00 28° 1.1mm
08:00 29° 1.1mm
10:00 29° 0.6mm
12:00 29°
14:00 29°
16:00 28° 0.6mm
18:00 28° 0.7mm
20:00 29° 0.7mm
22:00 29°
🌧️ WednesdayAugust 26th Avg 29° Low 29° at 03:00 High 29° at 23:00 7.5 mm rain Feels 32° Wind ~23 km/h
Cloudy Rain Cloudy Rain
00:00 29°
02:00 29°
04:00 29° 1.4mm
06:00 29°
08:00 29°
10:00 29° 0.4mm
12:00 29° 0.1mm
14:00 29° 0.1mm
16:00 29° 0.1mm
18:00 29° 0.4mm
20:00 29° 0.4mm
22:00 29° 0.1mm
🌧️ ThursdayAugust 27th Avg 29° Low 29° at 10:00 High 30° at 14:00 10.5 mm rain Wind ~23 km/h
Rain Clear Rain Partly Cloudy Rain
00:00 29°
02:00 29°
04:00 29° 0.1mm
06:00 29°
08:00 29°
10:00 29° 0.5mm
12:00 29° 0.8mm
14:00 30° 0.8mm
16:00 30° 0.8mm
18:00 29°
20:00 29°
22:00 29° 1.3mm
🌦️ FridayAugust 28th Avg 29° Low 28° at 04:00 High 29° at 23:00 2.7 mm rain Feels 32° Wind ~18 km/h
Cloudy Rain Cloudy Partly Cloudy Clear
00:00 29°
02:00 28°
04:00 28° 0.9mm
06:00 28°
08:00 28°
10:00 29°
12:00 29°
14:00 28°
16:00 29°
18:00 29°
20:00 29°
22:00 29°

Sun

☀️ Sunrise 06:53 · Sunset 19:57

13h 04m of daylight · America/New_York

Air quality

PM2.5 6.3 µg/m³ - Good

No reason to change your plans - open the windows.

Source: Copernicus CAMS, updated hourly.

Nearby

Brickell Hammock · 7.5 km Fisher Island · 7.8 km The Roads · 8.1 km Bay Heights · 8.3 km Tahiti · 8.5 km Sunrise Harbor · 8.6 km

Tools for Key Biscayne

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about Key Biscayne weather

Will it rain in Key Biscayne today?

No rain is in the forecast for Key Biscayne today.

What is the temperature in Key Biscayne right now?

It is 30° in Key Biscayne right now, though it feels closer to 35°. Today runs between a low of 27° and a high of 30°.

What time is sunrise and sunset in Key Biscayne?

The sun rises at 06:53 and sets at 19:57 local time in Key Biscayne today, giving 13h 04m of daylight.

What is the air quality in Key Biscayne?

PM2.5 in Key Biscayne is currently 6.3 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.

How accurate is the Key Biscayne forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Key Biscayne best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

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