Heavitree weather in September

In September, Heavitree sees average daytime highs of 17°C and overnight lows near 11°C, with 53 mm of rain across 9.5 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 16°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Heavitree's 5th-clearest and 9th-windiest month. For the whole year in context, see Heavitree's year-round climate.

Daytime high
17°
4th warmest
Overnight low
11°
9th coldest
Rainfall
53 mm
9.5 wet days
Daylight
12 h 24 min
5:57 AM – 6:20 PM
Cloud cover
70%
5th clearest
Wind
15 km/h
9th windiest
Solar energy
3.14 kWh/m²
Travel score
5.5
out of 10

Heavitree is location in Exeter, Devon, England.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 18°C in the first days to 16°C by the end.

A typical September day in Heavitree reaches about 17°C in the afternoon and slips back to 11°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 20°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11912
21912
31812
41812
51811
61811
71811
81811
91811
101811
111811
121811
131811
141811
151711
161711
171711
181711
191711
201710
211710
221710
231710
241710
251610
261610
271610
281610
291610
301610

How September really feels in Heavitree

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Heavitree weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6712.20.68.31.1
Feb / 5610.50.69.71.2
Mar10° / 5611.40.411.52.1
Apr12° / 6411.40.213.53.1
May15° / 6512015.24.3
Jun18° / 11°6110.8016.25.5
Jul20° / 13°5710.8015.86.0
Aug20° / 13°6511.3014.35.9
Sep17° / 11°539.5012.45.5
Oct14° / 7612.5010.43.7
Nov11° / 7312.308.72.3
Dec / 7311.90.47.81.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33466
43466
53466
63466
73466
83367
93367
103367
113268
123268
133268
143268
153268
163169
173169
183169
193169
203268
213268
223169
233070
243070
253070
263070
273070
283070
293070
302971

Chance of precipitation in September

Any precipitation

Heavitree gets around 53 mm of rain over 9.5 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 39% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
230
330
429
529
629
729
829
929
1029
1129
1229
1329
1430
1530
1630
1731
1831
1932
2032
2133
2234
2334
2435
2536
2637
2738
2838
2939
3039

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
157394
259374
360364
461354
562344
664324
765314
866304
967294
1069274
1170264
1271254
1373243
1474233
1574233
1675223
1776222
1877212
1977212
2077221
2177221
2277221
2377221
2477221
2578211
2678211
2779201
2879201
2980191
3080191

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 24 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 114 minutes over September. Sunrise moves from 5:33 AM to 6:20 AM, and sunset from 6:54 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:336:54
213.35:356:52
313.25:366:50
413.25:386:47
513.15:396:45
613.05:416:43
713.05:436:41
812.95:446:38
912.85:466:36
1012.85:476:34
1112.75:496:31
1212.65:516:29
1312.65:526:27
1412.55:546:24
1512.45:556:22
1612.45:576:20
1712.35:596:17
1812.26:006:15
1912.26:026:13
2012.16:036:10
2112.06:056:08
2212.06:076:06
2311.96:086:03
2411.96:106:01
2511.86:115:59
2611.76:135:56
2711.76:155:54
2811.66:165:52
2911.56:185:49
3011.56:205:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.14 kWh/m².

For context, solar energy here swings from a low near 0.69 kWh/m² to a high of 5.43 kWh/m² in June across the year — September's 3.14 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.6Moderate
53.6Moderate
63.6Moderate
73.5Moderate
83.5Moderate
93.4Moderate
103.4Moderate
113.4Moderate
123.3Moderate
133.3Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.5Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit Heavitree?

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

5.5
Sightseeing
3rd-best month of the year
1.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Heavitree for sightseeing.

What to pack for Heavitree in September

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

In September, Heavitree sees daytime highs around 17°C and nights near 11°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Heavitree in September

The nearest coast averages about 17°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in August at about 17°C and coldest in March near 9°C.

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

10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan10Bracing
Feb9Bracing
Mar9Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul16Cool
Aug17Cool
Sep17Cool
Oct16Cool
Nov14Bracing
Dec11Bracing

UV index in Heavitree in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Heavitree 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
Sep5Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Heavitree?

Heavitree sits at 50.7°N, 3.5°W, 36 m above sea level, in United Kingdom. The nearest listed city is Exeter, 2.0 km away.

Topography around Heavitree

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

Within 3 km, the terrain around Heavitree has only modest variations in elevation — a maximum elevation change of 157 m around an average of 37 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 327 m; within 80 km, large variations in elevation — a maximum elevation change of 651 m.

The land around Heavitree is covered by artificial surfaces (40%), trees (33%) and grassland (22%) within 3 km, grassland (49%) and trees (26%) within 16 km, and grassland (43%) and water (37%) within 80 km.

3 km
157 m
16 km
327 m
80 km
651 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Exeter 2.0 km · Exmouth 13 km · Tiverton 20 km · Newton Abbot 23 km · Torquay 29 km · Paignton 32 km · Brixham 36 km · Taunton 43 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 Heavitree (50.7204°, -3.4965°, elevation 36 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).