Falmouth in Summer
In summer (June, July and August), Falmouth sees average daytime highs around 19°C and overnight lows near 13°C, with 173 mm of rain over about 32 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 17°C in early June to 19°C by late August. The sky is clear or mostly clear about 15% of the time across summer, and the air most often feels dry.
Summer is Falmouth's best season of the year to visit on our travel score. For the whole year in context, see Falmouth's year-round climate.
- Avg daytime high
- 19°C
- warmest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 173 mm
- 32 wet days
- Avg wind
- 16 km/h
- Travel score
- 5.8
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Falmouth in Summer
Over the season highs climb from about 17°C in early June to 19°C by late August.
A typical summer day in Falmouth reaches about 19°C and drops to 13°C overnight. The warmest of the three months is July, the coolest June.
Falmouth weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 9° / 5° | 73 | 13.2 | 8.3 | 1.7 |
| Feb | 9° / 5° | 60 | 11.1 | 9.7 | 1.7 |
| Mar | 11° / 6° | 57 | 11.5 | 11.5 | 2.4 |
| Apr | 13° / 7° | 61 | 12.2 | 13.5 | 3.2 |
| May | 15° / 9° | 58 | 11.3 | 15.2 | 4.4 |
| Jun | 18° / 12° | 58 | 10.8 | 16.1 | 5.5 |
| Jul | 20° / 14° | 56 | 10.3 | 15.7 | 6.0 |
| Aug | 20° / 14° | 60 | 10.6 | 14.3 | 5.9 |
| Sep | 18° / 12° | 51 | 9.3 | 12.4 | 5.7 |
| Oct | 15° / 10° | 77 | 12.7 | 10.5 | 4.1 |
| Nov | 12° / 7° | 76 | 13.6 | 8.8 | 2.7 |
| Dec | 10° / 6° | 78 | 13.4 | 7.9 | 2.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 15% of the time across summer.
Chance of precipitation in Summer
Falmouth gets around 173 mm of rain over 32 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 16 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 48 min in early June to 13 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.9 kWh/m².
Is summer a good time to visit Falmouth?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Falmouth for sightseeing.
What to pack for Falmouth in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Falmouth sees daytime highs around 19°C and nights near 13°C. Worth packing: rain gear and sun protection. About 32 days see rain.
Sea temperature near Falmouth in Summer
The nearest coast averages about 16°C across summer — 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 17°C and coldest in March near 10°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 10 | 10 | 10 | 10 | 12 | 14 | 16 | 17 | 16 | 15 | 13 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 10 | Bracing |
| Mar | 10 | Bracing |
| Apr | 10 | Bracing |
| May | 12 | Bracing |
| Jun | 14 | Bracing |
| Jul | 16 | Cool |
| Aug | 17 | Cool |
| Sep | 16 | Cool |
| Oct | 15 | Bracing |
| Nov | 13 | Bracing |
| Dec | 12 | Bracing |
UV index in Falmouth in Summer
Clear-sky midday UV across summer averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Falmouth peaks around August 14 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 11 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 5 | 6 | 6 | 6 | 7 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Falmouth?
Falmouth sits at 50.2°N, 5.1°W, 34 m above sea level, in United Kingdom. The nearest listed city is Truro, 12 km away.
Topography around Falmouth
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Falmouth.
Within 3 km, the terrain around Falmouth has only modest variations in elevation — a maximum elevation change of 117 m around an average of 28 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, significant variations in elevation — a maximum elevation change of 408 m.
The land around Falmouth is covered by water (40%) and trees (21%) within 3 km, water (36%) and grassland (33%) within 16 km, and water (71%) within 80 km.
United Kingdom travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type D / G / M
- 230 V · 50 Hz
- Prices
- ≈ 89% of US
- price level, 2025
- GDP per capita
- $57,602
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2021
- Road deaths
- 3.2
- per 100k/yr, 2019
- 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 Falmouth (50.1544°, -5.0711°, elevation 34 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.