Lewes weather in July

In July, Lewes sees average daytime highs of 17°C and overnight lows near 15°C, with 50 mm of rain across 8.6 wet days and about 15.8 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 17°C through the month. The sky is clear or mostly clear about 33% of the time in July, and the air most often feels comfortable.

Daylight stretches from about 16 h 12 min at the start of July to 15 h 12 min by month's end. Set against the rest of the year, July is Lewes's 1st-clearest and 11th-windiest month. For the whole year in context, see Lewes's year-round climate.

Daytime high
17°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
50 mm
8.6 wet days
Daylight
15 h 54 min
4:09 AM – 8:02 PM
Cloud cover
56%
1st clearest
Wind
21 km/h
11th windiest
Solar energy
5.63 kWh/m²
Travel score
5.9
out of 10

Lewes is town in East Sussex, England.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 17°C through the month.

A typical July day in Lewes reaches about 17°C in the afternoon and slips back to 15°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 19°C. Set against its neighbours, July runs about 2°C warmer than June and about 1°C cooler than August.

10°13°15°18°20°151015202531
Avg high (°C)Avg low (°C)
11614
21614
31714
41714
51714
61715
71715
81715
91715
101715
111715
121715
131715
141715
151715
161715
171715
181715
191715
201815
211815
221816
231816
241816
251816
261816
271816
281816
291816
301816
311816

Lewes weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9814.40.58.21.3
Feb / 6711.60.69.71.1
Mar / 5310.10.311.51.6
Apr10° / 489.2013.52.5
May13° / 10°478.5015.23.6
Jun15° / 13°488.7016.24.7
Jul17° / 15°508.6015.85.9
Aug18° / 16°639.1014.36.1
Sep17° / 15°6810.7012.45.4
Oct15° / 12°11414.3010.43.9
Nov12° / 12315.908.72.5
Dec / 11114.60.47.81.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
45050
54951
65050
74951
84951
94951
105050
115050
124951
135050
145050
155248
165248
175347
185347
195446
205446
215545
225644
235743
245743
255743
265941
275941
285842
295842
305842
315941

Chance of precipitation in July

Any precipitation

Lewes gets around 50 mm of rain over 8.6 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
231
331
431
531
631
731
831
930
1030
1129
1228
1327
1427
1526
1625
1725
1824
1924
2024
2124
2224
2324
2424
2524
2624
2725
2825
2926
3026
3127

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the comfortable band about 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
150482
249492
347512
445532
544533
642553
741563
840573
939574
1037594
1136595
1235596
1334606
1433607
1532608
1631609
17306010
18296011
19286012
20276013
21266014
22256015
23246016
24236017
25226117
26216118
27206119
28196219
29196120
30186121
31186121

Wind in July

Winds average 21 km/h in July.

Across July, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2420light breeze
2520light breeze
2620light breeze
2720light breeze
2820light breeze
2920light breeze
3020light breeze
3120light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 12 min at the start of July to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over July. Sunrise moves from 3:56 AM to 4:29 AM, and sunset from 8:10 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.23:568:10
216.23:578:10
316.23:578:10
416.23:588:10
516.23:598:09
616.24:008:09
716.14:008:08
816.14:018:08
916.14:028:07
1016.14:038:07
1116.04:048:06
1216.04:058:05
1316.04:068:04
1415.94:078:04
1515.94:088:03
1615.94:098:02
1715.84:118:01
1815.84:128:00
1915.84:137:59
2015.74:147:58
2115.74:157:57
2215.64:177:55
2315.64:187:54
2415.64:197:53
2515.54:217:52
2615.54:227:50
2715.44:237:49
2815.44:257:48
2915.34:267:46
3015.34:287:45
3115.24:297:43

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.63 kWh/m².

For context, solar energy here swings from a low near 0.71 kWh/m² to a high of 5.81 kWh/m² in June across the year — July's 5.63 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.4Bright
315.4Bright
Planning a trip in July

Hazard calendar for Lewes

In seasonPeak

None of Lewes's seasonal hazards are active in July. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Lewes's rainy season runs August–February, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Lewes?

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

5.9
Sightseeing
2nd-best month of the year
1.5
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Lewes for sightseeing.

What to pack for Lewes in July

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

In July, Lewes sees daytime highs around 17°C and nights near 15°C. Worth packing: rain gear, sun protection and a windbreaker. About 9 days see rain.

rain gearsun protectiona windbreaker

Sea temperature near Lewes in July

The nearest coast averages about 16°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 29 km away) is warmest in August at about 17°C and coldest in March near 8°C.

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

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan10Bracing
Feb9Bracing
Mar8Bracing
Apr9Bracing
May11Bracing
Jun13Bracing
Jul16Cool
Aug17Cool
Sep17Cool
Oct16Cool
Nov14Bracing
Dec12Bracing

UV index in Lewes in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks 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 Lewes peaks around August 10 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 10UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Lewes?

Lewes sits at 50.9°N, 0.0°E, 27 m above sea level, in United Kingdom. The nearest listed city is Rottingdean, 9.0 km away.

Topography around Lewes

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

Within 3 km, the terrain around Lewes has only modest variations in elevation — a maximum elevation change of 161 m around an average of 38 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 247 m; within 80 km, significant variations in elevation — a maximum elevation change of 302 m.

The land around Lewes is covered by grassland (51%), cropland (23%) and trees (20%) within 3 km, grassland (41%) and trees (21%) within 16 km, and water (35%), grassland (23%) and trees (22%) within 80 km.

3 km
161 m
16 km
247 m
80 km
302 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Rottingdean 9.0 km · Peacehaven 9.0 km · Brighton 12 km · Uckfield 12 km · Seaford 13 km · Hove 13 km · Burgess Hill 14 km · Haywards Heath 16 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 Lewes (50.874°, 0.0088°, elevation 27 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).