Băicoi weather in September

In September, Băicoi sees average daytime highs of 22°C and overnight lows near 11°C, with 61 mm of rain across 7.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 19°C by the end. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Băicoi's 3rd-clearest and 5th-windiest month. For the whole year in context, see Băicoi's year-round climate.

Daytime high
22°
4th warmest
Overnight low
11°
9th coldest
Rainfall
61 mm
7.9 wet days
Daylight
12 h 18 min
6:02 AM – 6:20 PM
Cloud cover
49%
3rd clearest
Wind
7 km/h
5th windiest
Solar energy
3.93 kWh/m²
Travel score
7.0
out of 10

Băicoi is locality in Prahova County, Romania.

Founded
1543

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 24°C in the first days to 19°C by the end.

A typical September day in Băicoi reaches about 22°C in the afternoon and slips back to 11°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 27°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12413
22413
32413
42413
52312
62312
72312
82312
92312
102312
112212
122211
132211
142211
152211
162211
172111
182111
192111
202110
212110
222010
232010
242010
252010
262010
27199
28199
29199
30199

How September really feels in Băicoi

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.

Băicoi weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°417.35.790.0
Feb / -3°387.14.810.10.2
Mar10° / 529.5411.62.2
Apr15° / 6611.50.513.24.4
May20° / 10°9314.9014.65.7
Jun24° / 14°10715.6015.46.1
Jul26° / 15°8912.9015.16.4
Aug26° / 15°6310.8013.96.9
Sep22° / 11°617.9012.37.0
Oct15° / 607.90.410.75.0
Nov / 517.72.19.31.8
Dec / -3°517.84.48.60.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
27030
37030
47030
57030
67030
76931
86931
96832
106733
116634
126634
136535
146436
156238
166238
176139
185941
195941
205842
215842
225644
235644
245644
255545
265644
275644
285545
295545
305644

Chance of precipitation in September

Any precipitation

Băicoi gets around 61 mm of rain over 7.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
133
232
331
430
529
629
728
827
926
1025
1125
1224
1324
1424
1524
1624
1725
1825
1925
2025
2125
2225
2326
2426
2526
2626
2726
2826
2926
3026

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 (%)
1503515
2543313
3573211
4593110
562308
664297
765296
867285
969274
1070273
1171263
1272253
1374242
1474242
1575232
1676222
1776222
1876213
1977203
2077203
2178193
2279183
2379183
2480173
2581163
2681163
2781163
2882153
2982153
3082153

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 5:43 AM to 6:19 AM, and sunset from 6:49 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:436:49
213.15:446:48
313.05:466:46
412.95:476:44
512.95:486:42
612.85:496:40
712.85:516:38
812.75:526:36
912.75:536:34
1012.65:546:32
1112.65:556:30
1212.55:576:28
1312.55:586:26
1412.45:596:24
1512.46:006:22
1612.36:026:20
1712.36:036:18
1812.26:046:16
1912.16:056:14
2012.16:076:12
2112.06:086:10
2212.06:096:08
2311.96:106:06
2411.96:126:04
2511.86:136:02
2611.86:146:00
2711.76:155:58
2811.76:175:56
2911.66:185:55
3011.66:195:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.93 kWh/m².

For context, solar energy here swings from a low near 1.3 kWh/m² to a high of 5.93 kWh/m² in July across the year — September's 3.93 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.4Moderate
273.4Moderate
283.3Moderate
293.3Moderate
303.2Moderate
Planning a trip in September

Is September a good time to visit Băicoi?

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

7.0
Sightseeing
1st-best month of the year
4.6
Beach & pool
4th-best month of the year

September is one of the better times to visit Băicoi for general sightseeing.

What to pack for Băicoi in September

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

In September, Băicoi sees daytime highs around 22°C and nights near 11°C. Little to plan around — just the basics. About 8 days see rain.

UV index in Băicoi in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Băicoi peaks around July 17 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowJul 17UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr8Very high
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Băicoi?

Băicoi sits at 45.0°N, 25.9°E, 312 m above sea level, in Romania. The nearest listed city is Câmpina, 14 km away.

SinaiaMizilBuftea

Topography around Băicoi

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

Within 3 km, the terrain around Băicoi has only modest variations in elevation — a maximum elevation change of 99 m around an average of 304 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 657 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,447 m.

The land around Băicoi is covered by cropland (40%) and grassland (29%) within 3 km, trees (44%) and cropland (32%) within 16 km, and trees (48%) and cropland (32%) within 80 km.

3 km
99 m
16 km
657 m
80 km
2,447 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Câmpina 14 km · Ploieşti 16 km · Moreni 17 km · Breaza 22 km · Târgovişte 33 km · Sinaia 42 km · Mizil 47 km · Buftea 53 km

Romania travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 44% of US
price level, 2025
GDP per capita
$22,538
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
82%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
10.3
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 605
Religion
Romanian Orthodox 85%other 5%Roman Catholic 5%Reformed 3%

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 Băicoi (45.0333°, 25.85°, elevation 312 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).