Your August weather guide
HotWeather in Bermuda in August
August is a good time for Bermuda if warm swimming water matters more to you than reliably dry weather. Daytime highs average 27°C, the sea is around 28°C and there are about 17 rainy days. It is Bermuda's warmest month, but the catch is humid air and nights that offer little cooling down. For a UK traveller, it suits a swimming-focused holiday with flexible outdoor plans better than a trip built around staying active all day.
Long-term climate averages for Hamilton, not a forecast · 1991-2020
Bermuda, month by month
Your snapshot
At a glance
The useful details for Hamilton.
- Average daytime high
- 27.1°C
- 9 in 10 days stay below 28°C
- Average night-time low
- 25.6°C
- coldest 10% of nights: 24°C or lower
- Compared with London
- +5.7°C
- London averages 21.4°C in August
- Sea temperature
- 28.0°C
- year to year: 28°C to 29°C
- Sunshine per day (est.)
- 6.5h
- 49% of 13.2 h of daylight
- Rainy days (1 mm+)
- 17
- 125 mm over the month
- Humidity
- 81%
- Days over 25°C
- 100%
- none over 30°C
- Record high 1991-2020
- 29.0°C
- 2020-08-16
- Record low 1991-2020
- 22.0°C
- 1992-08-25
- Flight from London
- ≈ 7 h 42 min
- 5553 km, long-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How August compares
August is the 1st warmest month of the year in Bermuda and ranks 104th of 134 destinations we compare for August - see where else is hot in August. Against London's average high of 21.4°C in August, Bermuda is 5.7°C warmer by day and 12.1°C warmer at night.
Daytime and night-time in August
The typical August day in Bermuda peaks at 27.1°C, but that is an average: the warmest 10% of days reach 28.0°C or more. About 100% of days top 25°C. Nights average 25.6°C; one night in ten drops to 24.4°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 29.0°C (2020-08-16) and the coldest night 22.0°C (1992-08-25).
Rain in August
Wet (more than 8 rainy days): about 17 days with 1 mm or more, 125 mm in total. Year to year it varies a lot - the wettest August was 2004 with 287 mm, the driest 2018 with 38 mm. Humidity averages 81%.
Sea temperature in August
The sea averages 28.0°C - warm enough to swim (22°c+). Depending on the year it ranges from 27.5°C to 28.8°C. This is the warmest the sea gets here all year.
Sunshine and daylight
Around 6.5 hours of sunshine a day (estimated from cloud cover), 13.2 hours of daylight: the sun rises about 06:43 and sets about 20:04 local time in mid-August. Average cloud cover is 50%.
Is August a good time to visit Bermuda?
It is a reasonable choice: hot days but expect showers. The best months for Bermuda on our scoring are June, July, August; months averaging 25°C or more: Jul, Aug, Sep.
Warm days, with little relief at night
The heat is noticeably greater than at home: London's August daytime high averages 21.4°C, compared with Bermuda's 27.1°C. Humidity of 81% makes that warmth more demanding, so do not judge comfort by the daytime temperature alone. Loose, breathable clothing makes sense, and it is sensible to leave room for a break around midday rather than pack the day with activity. Average night lows are 25.6°C, so evenings are warm rather than a chance to cool off properly. Prioritise accommodation with air conditioning if you struggle to sleep in the heat. August suits travellers who enjoy sustained warmth more than those seeking fresh evenings.
Allow for rain rather than expecting clear skies
Rain is a meaningful part of an August holiday here, not something to dismiss when planning. With about 17 rainy days, keep outdoor plans movable and pack a light waterproof that will not feel too heavy in humid weather. That does not mean every wet day is a write-off, but these figures do not tell you how long individual spells of rain will last. Sunshine averages about 6.5 hours within 13.2 hours of daylight, so long days should not be confused with uninterrupted sunshine. August remains a reasonable choice for warmth and swimming; it is less convincing if dry weather is your main requirement.
A little perspective
Bermuda through the year
August is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 19.5°C | 17.3°C | 20.6°C | 2.9 | 106 | 13 | 0% |
| February | 19.0°C | 16.8°C | 19.8°C | 3.4 | 101 | 13 | 0% |
| March | 18.8°C | 16.7°C | 19.5°C | 4.1 | 110 | 12 | 0% |
| April | 19.7°C | 18.1°C | 20.0°C | 5.4 | 81 | 10 | 0% |
| May | 21.6°C | 20.3°C | 21.8°C | 5.9 | 87 | 10 | 0% |
| Junebest | 24.4°C | 23.1°C | 24.5°C | 5.9 | 109 | 13 | 34% |
| Julybest | 26.5°C | 25.2°C | 27.1°C | 6.9 | 106 | 16 | 96% |
| AugustSelectedbest | 27.1°C | 25.6°C | 28.0°C | 6.5 | 125 | 17 | 100% |
| September | 26.4°C | 25.0°C | 27.4°C | 5.4 | 138 | 15 | 96% |
| October | 24.6°C | 23.2°C | 25.7°C | 4.2 | 142 | 14 | 46% |
| November | 22.3°C | 20.6°C | 23.5°C | 3.8 | 98 | 12 | 1% |
| December | 20.7°C | 18.7°C | 21.8°C | 3.1 | 99 | 11 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in August
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Bermuda in August FAQs
Plain answers, grounded in the averages.
Is Bermuda hot in August?
Bermuda is hot in August: the average daytime high is 27.1°C and nights average 25.6°C. About 100% of August days reach 25°C or more.
Can you swim in the sea in Bermuda in August?
The sea around Bermuda averages 28.0°C in August, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 28°C to 29°C depending on the year.
How much does it rain in Bermuda in August?
Bermuda sees about 17 rainy days (1 mm or more) and 125 mm of rain in a typical August. The wettest August between 1991 and 2020 was 2004 (287 mm) and the driest was 2018 (38 mm).
How sunny is Bermuda in August?
Bermuda gets around 6.5 hours of sunshine a day in August out of 13.2 hours of daylight (estimated from average cloud cover).
How does Bermuda compare with the UK in August?
Bermuda is on average 5.7°C warmer than London by day in August (27.1°C against 21.4°C).
What is the hottest August on record in Bermuda?
Between 1991 and 2020 the hottest August day in Bermuda reached 29.0°C on 2020-08-16, and the coldest night dropped to 22.0°C on 1992-08-25.
Is the sea warm enough for swimming in August?
Yes. The sea averages 28°C, making August a good choice if you dislike a chilly swim. Warm water is a clear strength of the month, though sea temperature alone does not tell you about conditions on any particular day.
How long is the flight from London?
The flight from London takes about 7 hours 42 minutes, so Bermuda is a long-haul commitment. August makes most sense if warm seas and consistently warm air justify that journey for you, despite the rain and humidity.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Hamilton. Sea temperature from the nearest 5 km sea cell, 2.3 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C