Hamilton weather in September

In September, Hamilton sees average daytime highs of 27°C and overnight lows near 25°C, with 136 mm of rain across 14.2 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Hamilton's 4th-clearest and 9th-windiest month. For the whole year in context, see Hamilton's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
25°
10th coldest
Rainfall
136 mm
14.2 wet days
Daylight
12 h 12 min
6:08 AM – 6:19 PM
Cloud cover
56%
4th clearest
Wind
21 km/h
9th windiest
Solar energy
5.07 kWh/m²
Travel score
6.0
out of 10

Hamilton is capital of Bermuda.

Density
1,289/km²
people per km²
Founded
1793

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 27°C through the month.

A typical September day in Hamilton reaches about 27°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12726
22726
32726
42726
52726
62726
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172625
182625
192625
202625
212625
222625
232625
242625
252625
262625
272625
282625
292625
302625

Hamilton weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 17°10612.610.15.7
Feb19° / 17°10112.310.85.5
Mar19° / 17°10812.111.85.7
Apr20° / 18°819.712.86.4
May22° / 20°869.713.66.7
Jun24° / 23°10912.314.16.5
Jul27° / 25°10515.113.96.0
Aug27° / 26°12316.713.25.7
Sep27° / 25°13614.212.26.0
Oct25° / 23°13813.411.26.3
Nov22° / 21°9211.110.36.5
Dec21° / 19°9710.99.96.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25644
35644
45644
55743
65644
75644
85545
95545
105545
115545
125545
135545
145545
155545
165545
175545
185545
195545
205446
215347
225347
235347
245248
255149
265050
274951
284951
294951
304852

Chance of precipitation in September

Any precipitation

Hamilton gets around 136 mm of rain over 14.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 50% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
150
250
350
450
550
650
750
850
950
1050
1150
1249
1349
1448
1548
1647
1746
1846
1945
2044
2144
2244
2344
2445
2545
2645
2745
2844
2944
3044

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 67% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10487315
20497215
30497215
40597115
505107114
614117014
714127013
814127013
915136912
1015146812
1115156811
1215166810
131517689
141518688
151619677
162619667
172620666
182721655
192721655
202822644
212822644
222922643
232922643
2421022633
2521022633
2621022642
2721122632
2831123612
2931124602
3031225582

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 19 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
720light breeze
820light breeze
920light breeze
1020breezy
1120breezy
1220breezy
1320breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2923breezy
3023breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over September. Sunrise moves from 5:58 AM to 6:17 AM, and sunset from 6:40 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:586:40
212.75:596:38
312.65:596:37
412.66:006:36
512.66:016:34
612.56:016:33
712.56:026:32
812.56:026:30
912.46:036:29
1012.46:046:28
1112.46:046:26
1212.36:056:25
1312.36:066:23
1412.36:066:22
1512.26:076:21
1612.26:086:19
1712.26:086:18
1812.16:096:17
1912.16:106:15
2012.16:106:14
2112.06:116:12
2212.06:116:11
2312.06:126:10
2411.96:136:08
2511.96:136:07
2611.96:146:05
2711.86:156:04
2811.86:156:03
2911.86:166:01
3011.76:176:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.07 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 6.57 kWh/m² in July across the year — September's 5.07 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.5Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.1Bright
175.0Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Hamilton

In seasonPeak

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

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

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

Is September a good time to visit Hamilton?

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

6.0
Sightseeing
7th-best month of the year
5.9
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Hamilton for sightseeing.

What to pack for Hamilton in September

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

In September, Hamilton sees daytime highs around 27°C and nights near 25°C. Pack rain gear. Worth having: light clothes, sun protection and a windbreaker. About 14 days see rain.

rain gearlight clothessun protectiona windbreaker

Sea temperature near Hamilton in September

The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 28°C and coldest in March near 19°C.

It's comfortable for a long swim from Apr 17 to Feb 2 — about 9.6 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb20Cool
Mar19Cool
Apr20Cool
May22Refreshing
Jun24Warm
Jul27Warm
Aug28Warm
Sep27Warm
Oct26Warm
Nov24Refreshing
Dec22Refreshing

UV index in Hamilton 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 Hamilton peaks around June 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 18UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate
Location & terrain

Where is Hamilton?

Hamilton sits at 32.3°N, 64.8°W, 22 m above sea level, in Bermuda. The nearest listed city is Virginia Beach, 1,142 km away.

Topography around Hamilton

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hamilton.

Within 3 km, the terrain around Hamilton has only modest variations in elevation — a maximum elevation change of 63 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 76 m; within 80 km, only modest variations in elevation — a maximum elevation change of 70 m.

The land around Hamilton is covered by water (53%) and trees (23%) within 3 km, water (94%) within 16 km, and water (99%) within 80 km.

3 km
63 m
16 km
76 m
80 km
70 m
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Virginia Beach 1,142 km · Elizabeth City 1,143 km · Yarmouth 1,152 km · Barnstable 1,154 km · Havelock 1,158 km · Chesapeake 1,165 km · Norfolk 1,167 km · Portsmouth 1,168 km

Bermuda travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 120% of US
price level, 2024
GDP per capita
$142,250
2024
Homicide rate
6.2
per 100k, 2023
Income group
High
World Bank
Religion
Protestant 46%none 18%Roman Catholic 15%other Christian 9%

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 Hamilton (32.2949°, -64.783°, elevation 22 m), 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).