Bulle weather in September

In September, Bulle sees average daytime highs of 17°C and overnight lows near 9°C, with 126 mm of precipitation across 13.6 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 15°C by the end. The sky is clear or mostly clear about 30% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 12 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Bulle's 3rd-clearest and 10th-windiest month. For the whole year in context, see Bulle's year-round climate.

Daytime high
17°
4th warmest
Overnight low
9th coldest
Precipitation
126 mm
13.6 wet days
Daylight
12 h 18 min
6:16 AM – 6:36 PM
Cloud cover
58%
3rd clearest
Wind
5 km/h
10th windiest
Solar energy
3.8 kWh/m²
Travel score
4.9
out of 10
Air quality
Good
PM2.5 9 µg/m³ · 2020

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 15°C by the end.

A typical September day in Bulle reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 22°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11910
21910
31810
41810
51810
6189
7189
8189
9189
10179
11179
12179
13179
14179
15179
16178
17178
18168
19168
20168
21168
22168
23168
24168
25158
26157
27157
28157
29157
30157

How September really feels in Bulle

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.

Bulle weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°12313.311.38.80.0
Feb / -4°11111.810.5100.0
Mar / -1°11413.69.111.60.8
Apr11° / 11715.16.513.32.2
May15° / 16518.21.614.83.7
Jun19° / 10°16218.10.215.64.9
Jul21° / 12°16816.8015.35.6
Aug21° / 12°163160145.7
Sep17° / 12613.60.412.44.9
Oct12° / 11613.32.510.63.1
Nov / -0°12713.57.59.20.6
Dec / -4°14013.910.88.40.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14951
24951
34951
44951
54951
64951
74951
85050
95050
105050
115050
124951
134951
144852
154852
164753
174654
184555
194555
204555
214456
224456
234456
244456
254258
264159
274159
284060
294060
303961

Chance of precipitation in September

Any precipitationSnow

Bulle gets around 126 mm of rain and snow over 13.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 46% and peaks near 47% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1470
2470
3470
4470
5470
6470
7471
8471
9461
10461
11461
12461
13461
14461
15461
16461
17461
18462
19452
20452
21452
22452
23452
24452
25452
26462
27462
28473
29473
30473

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
175241
278220
379210
481190
583170
684160
786140
887130
989110
1090100
119280
129370
139460
149550
159550
169640
179730
189730
199820
209820
219820
229910
239910
249910
259910
269910
279910
2810000
2910000
3010000

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 12 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 102 minutes over September. Sunrise moves from 5:56 AM to 6:35 AM, and sunset from 7:07 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:567:07
213.15:587:05
313.15:597:03
413.06:007:01
512.96:026:59
612.96:036:57
712.86:046:54
812.86:066:52
912.76:076:50
1012.76:086:48
1112.66:106:46
1212.66:116:44
1312.56:126:42
1412.46:146:40
1512.46:156:38
1612.36:166:36
1712.36:186:34
1812.26:196:32
1912.26:206:30
2012.16:226:28
2112.06:236:26
2212.06:246:23
2311.96:266:21
2411.96:276:19
2511.86:286:17
2611.86:306:15
2711.76:316:13
2811.66:326:11
2911.66:346:09
3011.56:356:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.8 kWh/m².

For context, solar energy here swings from a low near 1.16 kWh/m² to a high of 5.81 kWh/m² in June across the year — September's 3.8 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.2Bright
74.2Bright
84.2Bright
94.1Bright
104.1Bright
114.0Bright
124.0Moderate
133.9Moderate
143.9Moderate
153.8Moderate
163.8Moderate
173.7Moderate
183.7Moderate
193.6Moderate
203.6Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.4Moderate
253.4Moderate
263.3Moderate
273.3Moderate
283.2Moderate
293.2Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Bulle?

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

4.9
Sightseeing
3rd-best month of the year
1.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Bulle for sightseeing.

What to pack for Bulle in September

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

In September, Bulle sees daytime highs around 17°C and nights near 9°C. Pack rain gear. Worth having: a warm layer. About 14 days see rain.

rain geara warm layer

UV index in Bulle 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 Bulle peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May7High
Jun7Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Bulle?

Bulle sits at 46.6°N, 7.1°E, 771 m above sea level, in Switzerland. The nearest listed city is Fribourg, 22 km away.

FribourgMontreuxVeveyPullyLausanneYverdon-les-BainsRenensMonthey

Topography around Bulle

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

Within 3 km, the terrain around Bulle has significant variations in elevation — a maximum elevation change of 323 m around an average of 774 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,747 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,030 m.

The land around Bulle is covered by grassland (50%) and trees (25%) within 3 km, grassland (52%) and trees (39%) within 16 km, and trees (42%) and grassland (35%) within 80 km.

3 km
323 m
16 km
1,747 m
80 km
4,030 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen
September weather nearby: Fribourg 22 km · Montreux 23 km · Vevey 24 km · Pully 32 km · Lausanne 34 km · Yverdon-les-Bains 36 km · Renens 37 km · Monthey 41 km

Switzerland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / J
230 V · 50 Hz
Prices
≈ 112% of US
price level, 2025
GDP per capita
$114,769
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
2.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 564
Religion
Roman Catholic 34%none 29%Protestant 23%other Christian 6%

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 Bulle (46.618°, 7.0569°, elevation 771 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. 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).