Jupiter weather in September

In September, Jupiter sees average daytime highs of 83°F and overnight lows near 79°F, with 6.7 in of rain across 22 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 83°F through the month. The sky is clear or mostly clear about 26% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Jupiter's 12th-clearest and 9th-windiest month. For the whole year in context, see Jupiter's year-round climate.

Daytime high
83°
3rd warmest
Overnight low
79°
10th coldest
Rainfall
6.7 in
22 wet days
Daylight
12 h 12 min
6:10 AM – 6:19 PM
Cloud cover
67%
12th clearest
Wind
9 mph
9th windiest
Solar energy
4.94 kWh/m²
Travel score
4.1
out of 10

Jupiter is town located in Palm Beach County, Florida, United States.

Density
1,041/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 83°F through the month.

A typical September day in Jupiter reaches about 83°F in the afternoon and slips back to 79°F overnight — a 4°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 85°F. Set against its neighbours, September runs about 1°F cooler than August and about 3°F warmer than October.

65°70°75°80°85°151015202530
Avg high (°F)Avg low (°F)
18480
28479
38479
48479
58479
68479
78479
88379
98379
108379
118379
128379
138379
148379
158379
168379
178379
188379
198379
208379
218379
228379
238379
248379
258379
268378
278378
288278
298278
308278

How September really feels in Jupiter

Once humidity and wind are folded in, September averages 23 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
23
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Jupiter weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan71° / 65°2.17.710.57.0
Feb72° / 66°1.96.5117.3
Mar74° / 68°2.67.411.87.4
Apr76° / 71°2.58.212.67.4
May80° / 75°3.511.713.36.5
Jun83° / 78°5.719.813.74.6
Jul84° / 80°4.52113.54.1
Aug85° / 80°5.922.8133.8
Sep83° / 79°6.72212.24.1
Oct80° / 76°4.614.111.46.0
Nov76° / 72°2.49.410.77.1
Dec73° / 68°1.88.210.37.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 59%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33466
43466
53664
63664
73763
83862
93862
104060
114060
124159
134258
144258
154357
164456
174456
184456
194456
204456
214456
224357
234456
244456
254357
264357
274456
284456
294456
304555

Chance of precipitation in September

Any precipitation

Jupiter gets around 6.7 in of rain over 22 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 73% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
180
280
380
479
579
679
778
878
977
1076
1175
1274
1374
1473
1572
1671
1771
1870
1970
2069
2169
2269
2368
2468
2568
2668
2767
2866
2966
3065

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1013762
2013861
3014059
4014158
5014257
6014455
7014554
8014752
9024850
10025049
11025147
12025246
13025345
14035344
15035443
16035443
17045442
18045442
19045541
20055540
21055639
22055738
23065737
24065836
25075835
26085834
27085933
28195832
29195931
301105930

Wind in September

Winds average 9 mph in September.

Across September, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over September. Sunrise moves from 6:03 AM to 6:16 AM, and sunset from 6:37 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:036:37
212.56:046:36
312.56:046:35
412.56:056:33
512.56:056:32
612.46:066:31
712.46:066:30
812.46:066:29
912.36:076:28
1012.36:076:27
1112.36:086:25
1212.36:086:24
1312.26:096:23
1412.26:096:22
1512.26:106:21
1612.26:106:19
1712.16:106:18
1812.16:116:17
1912.16:116:16
2012.06:126:15
2112.06:126:13
2212.06:136:12
2312.06:136:11
2411.96:146:10
2511.96:146:09
2611.96:156:08
2711.96:156:06
2811.86:156:05
2911.86:166:04
3011.86:166:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.94 kWh/m².

For context, solar energy here swings from a low near 3.06 kWh/m² to a high of 6.38 kWh/m² in May across the year — September's 4.94 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
Planning a trip in September

Hazard calendar for Jupiter

In seasonPeak

In September, Jupiter sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.

Jupiter sits in the Atlantic hurricane belt; the season peaks August–October.

Jupiter's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Jupiter?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.1
Sightseeing
10th-best month of the year
5.0
Beach & pool
11th-best month of the year

September is a reasonable time to visit Jupiter for sightseeing.

What to pack for Jupiter in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Jupiter sees daytime highs around 83°F and nights near 79°F. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Jupiter in September

The nearest coast averages about 84°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 mi away) is warmest in August at about 84°F and coldest in February near 74°F.

The water stays above 68°F all year — warm enough for a swim any month.

75°80°85°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan74Refreshing
Feb74Refreshing
Mar75Refreshing
Apr76Warm
May79Warm
Jun82Warm
Jul83Tropical
Aug84Tropical
Sep84Tropical
Oct82Warm
Nov79Warm
Dec77Warm

UV index in Jupiter in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jupiter peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 12UV 11Dec 18UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr9Very high
May9Very high
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Jupiter in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Jupiter is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1819 µg/m³Dec 138 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar11Good
Apr11Good
May11Good
Jun15Moderate
Jul20Moderate
Aug17Moderate
Sep12Good
Oct9Good
Nov8Good
Dec8Good
Location & terrain

Where is Jupiter?

Jupiter sits at 26.9°N, 80.1°W, 3 ft above sea level, in United States. The nearest listed city is Palm Beach Gardens, 8.1 mi away.

Topography around Jupiter

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Jupiter.

Within 2 miles, the terrain around Jupiter has only modest variations in elevation — a maximum elevation change of 39 ft around an average of 10 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 66 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 210 ft.

The land around Jupiter is covered by artificial surfaces (42%), trees (23%) and water (22%) within 2 miles, water (44%) and trees (26%) within 10 miles, and water (44%) within 50 miles.

2 miles
39 ft
10 miles
66 ft
50 miles
210 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Palm Beach Gardens 8.1 mi · Riviera Beach 11 mi · The Acreage 14 mi · West Palm Beach 16 mi · Royal Palm Beach 18 mi · Palm City 19 mi · Palm Springs 21 mi · Stuart 21 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Jupiter (26.9342°, -80.0942°, elevation 3 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).