Bay Harbor Islands, Florida Weather
First trades stir the ceiba canopy. Day 77 of spring. Read this microseason across nine climate regions →
Bay Harbor Islands weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Heavy Showers48%6.1″78°73°—
- FridayJun 5Overcast15%—81°74°+3°
- SaturdayJun 6Light Drizzle11%—83°78°+2°
- SundayJun 7Drizzle18%—84°80°+1°
- MondayJun 8Overcast41%—86°82°+2°
- TuesdayJun 9Light Drizzle52%—86°81°0°
- WednesdayJun 10Drizzle57%0.05″83°77°-3°
Ozone at AQI 40. AQI down 9 over the last 6 hours (steady decline since this morning). Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 40
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM scrubbed by 4 hours of recent rain — PM2.5 down to 5.5 µg/m³, PM10 to 8.0 µg/m³.
- PM2.5/PM10
- 0.69
- Wind
- light
- Recent rain
- 4h in last 6h
- Pattern
- washed out
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:10 AM
- Moonset
- 1:57 PM
- In sign
- ♑︎ Capricorn
First trades stir the ceiba canopy
Bay Harbor Islands at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: January 21 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Bay Harbor Islands
SPC has placed Bay Harbor Islands in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | lettuce, peas, spinach, radishes | — |
| March | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| April | tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | — | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Bay Harbor Islands's warmest month is August (~85°F mean) and its coldest is January (~68°F). Rainfall peaks in June (8.7 inches) and bottoms out in December (2.2 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 68° | 2.7″ | 3 |
| February | 70° | 2.8″ | 4 |
| March | 73° | 2.7″ | 4 |
| April | 76° | 3.2″ | 4 |
| May | 80° | 5.2″ | 7 |
| June | 83° | 8.7″ | 11 |
| July | 84° | 6.8″ | 12 |
| August | 85° | 8.5″ | 12 |
| September | 83° | 8.0″ | 11 |
| October | 80° | 7.7″ | 9 |
| November | 75° | 3.6″ | 5 |
| December | 71° | 2.2″ | 5 |
Regional context
Bay Harbor Islands sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Miami, FL, Tampa, FL, Orlando, FL, Jacksonville, FL, Cape Coral, FL.
Frequently asked
- When does it freeze in Bay Harbor Islands?
- Bay Harbor Islands's last spring frost typically falls around mid-February, and the first fall frost arrives around mid-December.
- What is the rainy season in Bay Harbor Islands?
- June is the wettest month with about 8.7 inches of rain on average; the city receives roughly 62 inches annually.
- What is the warmest month in Bay Harbor Islands?
- August is typically warmest, averaging about 85°F.
- What is the coldest month in Bay Harbor Islands?
- January is typically coldest, averaging about 68°F.
- When can I start a vegetable garden in Bay Harbor Islands?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-February); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Bay Harbor Islands get?
- Bay Harbor Islands averages about 88 rainy days per year.
- What hardiness zone is Bay Harbor Islands?
- Bay Harbor Islands's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Bay Harbor Islands, Florida sits in a humid subtropical climate zone. January means hover near 68°F while July averages 84°F — a 16°F seasonal swing.
Across the year, Bay Harbor Islands receives about 62 inches of precipitation spread over roughly 88 rainy days.
The rhythm of the year is set by latitude (25.9°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.