Climate and average weather in Warminster

In Warminster, the summers are mild, showery, and partly cloudy and the winters are cold and mostly cloudy.

Best: late May to late September

Over the course of the year, the temperature in Warminster typically varies from 3°C to 21°C, and is rarely below -3°C or above 26°C. July is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Warminster for warm-weather activities is from late May to late September.

Hottest
Jul
21°
Coldest
Jan
Wettest
Nov
76 mm
Driest
Mar
56 mm
Rain / yr
795 mm
138 wet days
Daylight
7.6–16.4 h
shortest–longest
Elevation
120 m
51.2°N
Clearest
Jul
67% cloud

Warminster is town and civil parish in western Wiltshire, England.

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

Warminster 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 late May to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Warminster, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.5 months, from June 4 to September 18, with daily high temperatures above 17°C. The hottest month of the year in Warminster is July, with an average high of 21°C and low of 13°C.

The cool season lasts 3.8 months, from November 19 to March 14, with daily high temperatures below 10°C. The coldest month of the year in Warminster is January, with an average low of 3°C and high of 7°C.

Days typically run about 7°C warmer than nights, with the widest day–night swing (around 8°C) in July.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan73
Feb83
Mar104
Apr135
May168
Jun1811
Jul2113
Aug2013
Sep1810
Oct148
Nov105
Dec83

How hot and cold Warminster really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the coldest nights, wind chill pulls the feels-like down to about -2°C (around January 26), with roughly 102 freezing days a year (feels-like at or below 0°C), worst in January.

-5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan77-23
Feb88-23
Mar101004
Apr131325
May161658
Jun18181011
Jul20211313
Aug20201313
Sep18181010
Oct141458
Nov101025
Dec88-13

Average hourly temperature in Warminster

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 July afternoons, near 21°C, and coldest before dawn in January, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Warminster weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7212.80.68.21.0
Feb / 56110.89.61.2
Mar10° / 5610.90.511.52.2
Apr13° / 6311.80.213.53.3
May16° / 6511.4015.34.6
Jun18° / 11°6111.2016.35.6
Jul21° / 13°6411.2015.96.1
Aug20° / 13°7411.6014.45.9
Sep18° / 10°579.8012.45.6
Oct14° / 7612010.43.8
Nov10° / 7612.50.18.72.2
Dec / 7611.90.57.71.2

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Warminster gets about 795 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 4.6 months, from around Oct 19 to Mar 6, peaking in November at about 44% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Sep 7.

November is the wettest month by volume, with 76 mm over about 13 wet days; March is the driest, with 56 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetNov 4 · 44%Sep 7 · 30%
Rain on a day (%)Rain days
Jan4113
Feb3911
Mar3611
Apr3812
May3811
Jun3811
Jul3511
Aug3712
Sep3310
Oct3912
Nov4113
Dec3912

Monthly rainfall

Over a full year, Warminster collects about 795 mm of rain across 138 wet days — roughly 66 mm in an average month.

It doesn’t fall evenly. November is the wettest month with 76 mm, while March is the driest at just 56 mm. The three wettest months alone bring about 29% of the year’s total, and some of the cold-season precipitation falls as snow.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec725656636561647457767676
Rainfall (mm)Rain daysSnow days
Jan72131
Feb56111
Mar56111
Apr63120
May65110
Jun61110
Jul64110
Aug74120
Sep57100
Oct76120
Nov76130
Dec76121

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Warminster, the average share of the sky covered by clouds shows mild seasonal variation over the course of the year.

The clearer part of the year begins around June 25 and lasts for 2.4 months, ending around September 5. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 36% of the time on average.

The cloudier part of the year begins around September 6 and lasts for 6.5 months, ending around March 22. The cloudiest month is November, when it is overcast or mostly cloudy 73% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJul 26 · 39%Nov 24 · 25%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2872
Feb2872
Mar2971
Apr3565
May3169
Jun3070
Jul3664
Aug3565
Sep2971
Oct2872
Nov2773
Dec2872

Daylight, sunrise and sunset

DaylightNight

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 22, brings about 16 h 24 min of light; the shortest, around December 21, only 7 h 36 min — a swing of roughly 8 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan8.28:144:22
Feb9.67:345:13
Mar11.56:336:04
Apr13.55:226:56
May15.34:257:45
Jun16.33:598:18
Jul15.94:178:12
Aug14.45:017:24
Sep12.45:526:15
Oct10.46:425:06
Nov8.77:364:12
Dec7.78:153:55

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Warminster gets about 4 sunny days a month gloomy — and it barely shifts through the year, holding between 4 and 6 days every month. Clear skies here are a flat line, not a season.

0510JanFebMarAprMayJunJulAugSepOctNovDecgloomymixedJul 226 daysNov 224 days
Sunny daysSky
Jan4Gloomy
Feb4Gloomy
Mar5Gloomy
Apr5Gloomy
May4Gloomy
Jun4Gloomy
Jul5Gloomy
Aug4Gloomy
Sep4Gloomy
Oct4Gloomy
Nov4Gloomy
Dec5Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Warminster, the air stays dry or comfortable essentially all year. Even in August, the muggiest month, it feels humid or worse only about 9% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMay 10 · 100%Aug 10 · 88%humidcomfortabledrycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)
Jan10000
Feb10000
Mar10000
Apr10000
May9550
Jun80182
Jul55397
Aug54369
Sep75232
Oct89110
Nov9910
Dec10000

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 Warminster is typically light breeze, near 15 km/h, and varies little with the seasons.

The windier part of the year lasts 5.7 months, from around Oct 12 to Apr 4. The windiest month is January, averaging about 18 km/h (light breeze).

The calmer part of the year runs from around Apr 5 to Oct 11, with July the calmest month at about 14 km/h.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezebreezyJan 9 · 18 km/hJul 29 · 13 km/h
Wind speed (km/h)Feels
Jan18light breeze
Feb17light breeze
Mar16light breeze
Apr15light breeze
May15light breeze
Jun14light breeze
Jul14light breeze
Aug13light breeze
Sep14light breeze
Oct16light breeze
Nov16light breeze
Dec17light breeze

Best time to visit Warminster

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Warminster throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid September, Warminster 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, the best time of year to visit Warminster for general outdoor tourist activities is from late May to late September, with a peak score in the third week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 21 · 6.3

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).

Travel score (0–10)Rating
Jan1.0poor
Feb1.2poor
Mar2.2poor
Apr3.3poor
May4.6fair
Jun5.6good
Jul6.1good
Aug6.0good
Sep5.5good
Oct3.8fair
Nov2.2poor
Dec1.2poor

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 Warminster for hot-weather activities is from early July to late August, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 26 · 3.7

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 Warminster, by month

EssentialRecommendedOptional

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 July (highs near 21°C), the essentials are rain gear and sun protection. In the cold season around January (highs near 7°C), pack a warm layer, a heavy coat and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In July, Warminster sees daytime highs around 21°C and nights near 13°C. Worth packing: rain gear and sun protection. About 11 days see rain.

Sea temperature near Warminster

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 52 km away) is warmest in August at about 18°C and coldest in February near 7°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar7Bracing
Apr9Bracing
May12Bracing
Jun15Cool
Jul18Cool
Aug18Cool
Sep17Cool
Oct15Bracing
Nov12Bracing
Dec9Bracing

UV index (midday) in Warminster by month

LowModerateHighVery highExtreme

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 Warminster peaks around August 13 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 13UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug7High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Average hourly UV index in Warminster

LowModerateHighVery highExtreme

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 August the burn window is concentrated in the middle of the day: about 7 hours a day reach index 3 (protection recommended), and 2 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb00
Mar00
Apr40
May6.50
Jun7.51
Jul70
Aug72
Sep4.50
Oct00
Nov00
Dec00
Almanac & agriculture

Growing season

Chance of a frost-free dayReliably frost-free (≥90%)

Warminster is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about March 17 to November 16 (245 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freeMar 1790%Nov 1690%
Frost-free chance (%)Frost nights
Jan7731
Feb7628
Mar8815
Apr960
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct980
Nov9017
Dec7831

Growing degree days

Degree days (base 10°C)Frost-free shaded

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. Warminster banks about 751 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.

0200400600800JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar0
Apr1
May57
Jun138
Jul203
Aug197
Sep122
Oct33
Nov0
Dec0

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.

Warminster receives about 2.9 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 0.6 and 5.3 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Mar 22 to Sep 17. The brightest month is June, averaging about 5.2 kWh/m² (bright).

The dimmest month is December, down near 0.7 kWh/m² — roughly 87% less than the June peak.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightJun 235.3 kWhDec 210.6 kWh
Solar energy (kWh/m²)Level
Jan0.8Dim
Feb1.5Dim
Mar2.7Moderate
Apr4.1Bright
May5.0Bright
Jun5.2Bright
Jul5.0Bright
Aug4.2Bright
Sep3.0Moderate
Oct1.8Dim
Nov1.0Dim
Dec0.7Dim

Where is Warminster?

Warminster sits at 51.2°N, 2.2°W, 120 m above sea level, in United Kingdom. The nearest listed city is Westbury, 6.0 km away.

Topography around Warminster

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

Within 3 km, the terrain around Warminster has only modest variations in elevation — a maximum elevation change of 119 m around an average of 137 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 268 m; within 80 km, significant variations in elevation — a maximum elevation change of 462 m.

The land around Warminster is covered by grassland (39%) and trees (32%) within 3 km, grassland (50%) and cropland (28%) within 16 km, and grassland (41%) and cropland (24%) within 80 km.

3 km
119 m
16 km
268 m
80 km
462 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Westbury 6.0 km · Frome 10 km · Trowbridge 13 km · Melksham 19 km · Devizes 21 km · Bath 23 km · Neston 23 km · Chippenham 29 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
Christian 60%none 26%Muslim 4%other 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 Warminster (51.2043°, -2.1787°, elevation 120 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. 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).