Climate and average weather in Hamilton
In Hamilton, the summers are muggy, warm, wet, and partly cloudy and the winters are mild, windy, and partly cloudy.
Over the course of the year, the temperature in Hamilton typically varies from 17°C to 27°C, and is rarely below 14°C or above 28°C. August is the hottest month of the year, while March is the coldest.
Based on the travel score, the best time of year to visit Hamilton for warm-weather activities is from early January to late December.
- Hottest
- Aug
- 27°
- Coldest
- Mar
- 17°
- Wettest
- Oct
- 138 mm
- Driest
- Apr
- 81 mm
- Rain / yr
- 1282 mm
- 150 wet days
- Daylight
- 9.9–14.1 h
- shortest–longest
- Elevation
- 22 m
- 32.3°N
- Clearest
- Jul
- 50% cloud
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.
Hamilton weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early January to late December.
Temperature through the year
Daily average highs and lows in Hamilton, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 3.6 months, from June 23 to October 11, with daily high temperatures above 25°C. The hottest month of the year in Hamilton is August, with an average high of 27°C and low of 26°C.
The cool season lasts 4.2 months, from December 23 to April 28, with daily high temperatures below 20°C. The coldest month of the year in Hamilton is March, with an average low of 17°C and high of 19°C.
Days typically run about 2°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 19 | 19 | 20 | 22 | 24 | 27 | 27 | 27 | 25 | 22 | 21 |
| Avg low (°C) | 17 | 17 | 17 | 18 | 20 | 23 | 25 | 26 | 25 | 23 | 21 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 20 | 17 |
| Feb | 19 | 17 |
| Mar | 19 | 17 |
| Apr | 20 | 18 |
| May | 22 | 20 |
| Jun | 24 | 23 |
| Jul | 27 | 25 |
| Aug | 27 | 26 |
| Sep | 27 | 25 |
| Oct | 25 | 23 |
| Nov | 22 | 21 |
| Dec | 21 | 19 |
Average hourly temperature in Hamilton
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on August afternoons, near 27°C, and coldest before dawn in March, near 17°C.
Hamilton weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 17° | 106 | 12.6 | 10.1 | 5.7 |
| Feb | 19° / 17° | 101 | 12.3 | 10.8 | 5.5 |
| Mar | 19° / 17° | 108 | 12.1 | 11.8 | 5.7 |
| Apr | 20° / 18° | 81 | 9.7 | 12.8 | 6.4 |
| May | 22° / 20° | 86 | 9.7 | 13.6 | 6.7 |
| Jun | 24° / 23° | 109 | 12.3 | 14.1 | 6.5 |
| Jul | 27° / 25° | 105 | 15.1 | 13.9 | 6.0 |
| Aug | 27° / 26° | 123 | 16.7 | 13.2 | 5.7 |
| Sep | 27° / 25° | 136 | 14.2 | 12.2 | 6.0 |
| Oct | 25° / 23° | 138 | 13.4 | 11.2 | 6.3 |
| Nov | 22° / 21° | 92 | 11.1 | 10.3 | 6.5 |
| Dec | 21° / 19° | 97 | 10.9 | 9.9 | 6.1 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Hamilton gets about 1282 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 4.2 months, from around Jun 19 to Oct 23, peaking in August at about 55% chance on a given day. The drier stretch runs the rest of the year, bottoming out around May 1.
October is the wettest month by volume, with 138 mm over about 13 wet days; April is the driest, with 81 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 41 | 44 | 39 | 31 | 32 | 41 | 49 | 53 | 47 | 43 | 37 | 36 |
| Rain days | 13 | 12 | 12 | 10 | 10 | 12 | 15 | 17 | 14 | 13 | 11 | 11 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 41 | 13 |
| Feb | 44 | 12 |
| Mar | 39 | 12 |
| Apr | 31 | 10 |
| May | 32 | 10 |
| Jun | 41 | 12 |
| Jul | 49 | 15 |
| Aug | 53 | 17 |
| Sep | 47 | 14 |
| Oct | 43 | 13 |
| Nov | 37 | 11 |
| Dec | 36 | 11 |
Monthly rainfall
Over a full year, Hamilton collects about 1282 mm of rain across 150 wet days — roughly 107 mm in an average month.
It doesn’t fall evenly. October is the wettest month with 138 mm, while April is the driest at just 81 mm. The three wettest months alone bring about 31% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 106 | 101 | 108 | 81 | 86 | 109 | 105 | 123 | 136 | 138 | 92 | 97 |
| Rain days | 13 | 12 | 12 | 10 | 10 | 12 | 15 | 17 | 14 | 13 | 11 | 11 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 106 | 13 |
| Feb | 101 | 12 |
| Mar | 108 | 12 |
| Apr | 81 | 10 |
| May | 86 | 10 |
| Jun | 109 | 12 |
| Jul | 105 | 15 |
| Aug | 123 | 17 |
| Sep | 136 | 14 |
| Oct | 138 | 13 |
| Nov | 92 | 11 |
| Dec | 97 | 11 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Hamilton, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around June 8 and lasts for 3.7 months, ending around September 29. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 60% of the time on average.
The cloudier part of the year begins around November 1 and lasts for 5.1 months, ending around April 5. The cloudiest month is January, when it is overcast or mostly cloudy 65% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 35 | 37 | 43 | 52 | 53 | 51 | 60 | 60 | 54 | 46 | 45 | 38 |
| Cloudier (%) | 65 | 63 | 57 | 48 | 47 | 49 | 40 | 40 | 46 | 54 | 55 | 62 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 35 | 65 |
| Feb | 37 | 63 |
| Mar | 43 | 57 |
| Apr | 52 | 48 |
| May | 53 | 47 |
| Jun | 51 | 49 |
| Jul | 60 | 40 |
| Aug | 60 | 40 |
| Sep | 54 | 46 |
| Oct | 46 | 54 |
| Nov | 45 | 55 |
| Dec | 38 | 62 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 9, brings about 14 h 06 min of light; the shortest, around January 1, only 9 h 54 min — a swing of roughly 4 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.1 | 10.8 | 11.8 | 12.8 | 13.6 | 14.1 | 13.9 | 13.2 | 12.2 | 11.2 | 10.3 | 9.9 |
| Sunrise (AM) | 7:25 | 7:09 | 6:36 | 5:56 | 5:26 | 5:16 | 5:27 | 5:47 | 6:08 | 6:28 | 6:55 | 7:19 |
| Sunset (PM) | 5:31 | 5:58 | 6:21 | 6:43 | 7:05 | 7:23 | 7:23 | 6:59 | 6:19 | 5:40 | 5:14 | 5:12 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.1 | 7:25 | 5:31 |
| Feb | 10.8 | 7:09 | 5:58 |
| Mar | 11.8 | 6:36 | 6:21 |
| Apr | 12.8 | 5:56 | 6:43 |
| May | 13.6 | 5:26 | 7:05 |
| Jun | 14.1 | 5:16 | 7:23 |
| Jul | 13.9 | 5:27 | 7:23 |
| Aug | 13.2 | 5:47 | 6:59 |
| Sep | 12.2 | 6:08 | 6:19 |
| Oct | 11.2 | 6:28 | 5:40 |
| Nov | 10.3 | 6:55 | 5:14 |
| Dec | 9.9 | 7:19 | 5:12 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Hamilton averages about 9 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 4 and 15 days.
The sunnier stretch runs 6.4 months, from around Apr 11 to Oct 22. The sunniest month is July, with roughly 14 sunny days (mixed).
The greyest month is December, down near 5 sunny days — about 61% fewer than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 5 | 5 | 7 | 10 | 12 | 11 | 14 | 14 | 11 | 9 | 7 | 5 |
| Sky | Gloomy | Gloomy | Gloomy | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 5 | Gloomy |
| Feb | 5 | Gloomy |
| Mar | 7 | Gloomy |
| Apr | 10 | Mixed |
| May | 12 | Mixed |
| Jun | 11 | Mixed |
| Jul | 14 | Mixed |
| Aug | 14 | Mixed |
| Sep | 11 | Mixed |
| Oct | 9 | Mixed |
| Nov | 7 | Gloomy |
| Dec | 5 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Hamilton, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.0 months, from around May 7 to November 5. The muggiest month is July, when the air feels humid, muggy or worse about 100% of the time.
The most comfortable stretch runs from around November 6 to May 6, and March is the most comfortable month — the air is dry or comfortable 76% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 47 | 51 | 51 | 33 | 12 | 1 | 0 | 0 | 0 | 2 | 20 | 37 |
| Comfortable (%) | 24 | 22 | 26 | 25 | 16 | 5 | 0 | 0 | 2 | 16 | 26 | 27 |
| Humid (%) | 22 | 22 | 19 | 30 | 26 | 9 | 2 | 2 | 7 | 19 | 26 | 24 |
| Muggy (%) | 7 | 6 | 5 | 12 | 39 | 31 | 6 | 5 | 17 | 30 | 24 | 12 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 7 | 54 | 83 | 78 | 66 | 33 | 4 | 0 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 1 | 9 | 15 | 8 | 1 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 47 | 24 | 22 | 7 | 0 | 0 |
| Feb | 51 | 22 | 22 | 6 | 0 | 0 |
| Mar | 51 | 26 | 19 | 5 | 0 | 0 |
| Apr | 33 | 25 | 30 | 12 | 0 | 0 |
| May | 12 | 16 | 26 | 39 | 7 | 0 |
| Jun | 1 | 5 | 9 | 31 | 54 | 1 |
| Jul | 0 | 0 | 2 | 6 | 83 | 9 |
| Aug | 0 | 0 | 2 | 5 | 78 | 15 |
| Sep | 0 | 2 | 7 | 17 | 66 | 8 |
| Oct | 2 | 16 | 19 | 30 | 33 | 1 |
| Nov | 20 | 26 | 26 | 24 | 4 | 0 |
| Dec | 37 | 27 | 24 | 12 | 0 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Hamilton is typically breezy, near 25 km/h, and varies a lot with the seasons.
The windier part of the year lasts 6.1 months, from around Oct 17 to Apr 19. The windiest month is January, averaging about 31 km/h (windy).
The calmer part of the year runs from around Apr 20 to Oct 16, with August the calmest month at about 18 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 31 | 31 | 30 | 26 | 22 | 20 | 19 | 18 | 21 | 25 | 27 | 29 |
| Feels | windy | windy | windy | breezy | breezy | light breeze | light breeze | light breeze | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 31 | windy |
| Feb | 31 | windy |
| Mar | 30 | windy |
| Apr | 26 | breezy |
| May | 22 | breezy |
| Jun | 20 | light breeze |
| Jul | 19 | light breeze |
| Aug | 18 | light breeze |
| Sep | 21 | breezy |
| Oct | 25 | breezy |
| Nov | 27 | breezy |
| Dec | 29 | breezy |
Hazard calendar for Hamilton
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Hamilton sits in the Atlantic hurricane belt; the season peaks August–October.
Best time to visit Hamilton
To characterize how pleasant the weather is in Hamilton throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late December, Hamilton is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, Hamilton suits general outdoor tourist activities for most of the year, with a peak score in the first week of May.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 5.7 | 5.5 | 5.8 | 6.4 | 6.7 | 6.5 | 6.0 | 5.7 | 6.0 | 6.3 | 6.5 | 6.1 |
| Rating | good | good | good | good | good | good | good | good | good | good | good | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 5.7 | good |
| Feb | 5.5 | good |
| Mar | 5.8 | good |
| Apr | 6.4 | good |
| May | 6.7 | good |
| Jun | 6.5 | good |
| Jul | 6.0 | good |
| Aug | 5.7 | good |
| Sep | 6.0 | good |
| Oct | 6.3 | good |
| Nov | 6.5 | good |
| Dec | 6.1 | good |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Hamilton for hot-weather activities is from late May to mid November, with a peak score in the last week of July.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Hamilton, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around August (highs near 27°C), the essentials are light clothes, rain gear and sun protection. In the cold season around March (highs near 19°C), pack rain gear and a windbreaker.
In August, Hamilton sees daytime highs around 27°C and nights near 26°C. Pack light clothes, rain gear and sun protection. About 17 days see rain.
Sea temperature near Hamilton
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 20 | 19 | 20 | 22 | 24 | 27 | 28 | 27 | 26 | 24 | 22 |
| Comfort | Refreshing | Cool | Cool | Cool | Refreshing | Warm | Warm | Warm | Warm | Warm | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Refreshing |
| Feb | 20 | Cool |
| Mar | 19 | Cool |
| Apr | 20 | Cool |
| May | 22 | Refreshing |
| Jun | 24 | Warm |
| Jul | 27 | Warm |
| Aug | 28 | Warm |
| Sep | 27 | Warm |
| Oct | 26 | Warm |
| Nov | 24 | Refreshing |
| Dec | 22 | Refreshing |
UV index (midday) in Hamilton by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 6 | 7 | 9 | 11 | 10 | 11 | 9 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 6 | High |
| Apr | 7 | Very high |
| May | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Average hourly UV index in Hamilton
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in June the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 3.5 | 4.5 | 6 | 7 | 8 | 8.5 | 8.5 | 8 | 7 | 5.5 | 3.5 | 1.5 |
| UV ≥ 6 (h/day) | 0 | 0 | 0.5 | 3.5 | 5.5 | 6 | 6 | 5.5 | 4.5 | 1.5 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 3.5 | 0 |
| Feb | 4.5 | 0 |
| Mar | 6 | 0.5 |
| Apr | 7 | 3.5 |
| May | 8 | 5.5 |
| Jun | 8.5 | 6 |
| Jul | 8.5 | 6 |
| Aug | 8 | 5.5 |
| Sep | 7 | 4.5 |
| Oct | 5.5 | 1.5 |
| Nov | 3.5 | 0 |
| Dec | 1.5 | 0 |
Growing season
Hamilton is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Hamilton banks about 4,320 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 263 | 224 | 244 | 270 | 343 | 415 | 493 | 509 | 474 | 434 | 348 | 304 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 263 |
| Feb | 224 |
| Mar | 244 |
| Apr | 270 |
| May | 343 |
| Jun | 415 |
| Jul | 493 |
| Aug | 509 |
| Sep | 474 |
| Oct | 434 |
| Nov | 348 |
| Dec | 304 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Hamilton receives about 4.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.3 and 6.6 kWh/m².
The brighter stretch of the year lasts 6.2 months, from around Mar 21 to Sep 25. The brightest month is July, averaging about 6.6 kWh/m² (intense).
The dimmest month is December, down near 2.4 kWh/m² — roughly 63% less than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.5 | 3.3 | 4.5 | 5.8 | 6.4 | 6.5 | 6.6 | 6.0 | 5.1 | 3.8 | 2.9 | 2.4 |
| Level | Moderate | Moderate | Bright | Bright | Intense | Intense | Intense | Intense | Bright | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 2.5 | Moderate |
| Feb | 3.3 | Moderate |
| Mar | 4.5 | Bright |
| Apr | 5.8 | Bright |
| May | 6.4 | Intense |
| Jun | 6.5 | Intense |
| Jul | 6.6 | Intense |
| Aug | 6.0 | Intense |
| Sep | 5.1 | Bright |
| Oct | 3.8 | Moderate |
| Nov | 2.9 | Moderate |
| Dec | 2.4 | Moderate |
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.
What Hamilton looks like
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.
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
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).