Sullivan's Island, South Carolina Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Sullivan's Island weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast19%—89°81°—
- MondayJul 6Overcast13%—90°81°+1°
- TuesdayJul 7Light Drizzle29%0.01″94°79°+4°
- WednesdayJul 8Light Drizzle29%—95°79°+1°
- ThursdayJul 9Overcast17%—96°78°+1°
- FridayJul 10Overcast16%—95°80°-1°
- SaturdayJul 11Partly Cloudy39%—94°81°-1°
AQI 24 (Good), driven by Ozone. AQI down 6 over the last 6 hours (gradual decline). Ozone at AQI 30 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 7 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 4 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 30 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 7 around 1 PM.
- Present
- AQI 30
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 4.6 µg/m³, PM10 at 6.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.75
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:32 PM
- Moonset
- 11:32 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Sullivan's Island at a glance
- Today vs. normal: 81°F — typical for the season
- Last frost: March 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — Sullivan's Island
- Sun89°81°19%
- Mon90°81°13%
- Tue94°79°29%
- Wed95°79°29%
- Thu96°78°17%
- Fri95°80°16%
- Sat94°81°39%
- Sun95°77°48%
- Mon91°74°40%
- Tue87°71°30%
- Wed89°74°19%
- Thu90°73°43%
- Fri87°73°42%
- Sat85°74°55%
- Sun89°75°31%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Sullivan's Island
SPC includes Sullivan's Island in the general thunderstorm area today — no severe risk, but storms are possible.
- 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.
ZIP codes in Sullivan's Island
- 29482