Piatra Neamţ weather in September

In September, Piatra Neamţ sees average daytime highs of 19°C and overnight lows near 8°C, with 64 mm of precipitation across 9.7 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 17°C by the end. The sky is clear or mostly clear about 31% 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 Piatra Neamţ's 4th-clearest and 7th-windiest month. For the whole year in context, see Piatra Neamţ's year-round climate.

Daytime high
19°
4th warmest
Overnight low
9th coldest
Precipitation
64 mm
9.7 wet days
Daylight
12 h 18 min
5:59 AM – 6:19 PM
Cloud cover
58%
4th clearest
Wind
8 km/h
7th windiest
Solar energy
3.59 kWh/m²
Travel score
6.0
out of 10

Piatra Neamţ is locality in Neamț County, Romania.

Air quality
Elevated
PM2.5 18.3 µg/m³ · 2010
Founded
1395

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 21°C in the first days to 17°C by the end.

A typical September day in Piatra Neamţ reaches about 19°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 25°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)
12110
22110
32110
42110
52110
62010
7209
8209
9209
10209
11209
12199
13199
14198
15198
16198
17198
18188
19188
20188
21187
22187
23177
24177
25177
26177
27177
28176
29166
30166

How September really feels in Piatra Neamţ

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.

Piatra Neamţ 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-0° / -7°296.87.18.80.0
Feb / -6°306.96.4100.0
Mar / -2°5111.2711.60.8
Apr13° / 6912.42.313.33.3
May18° / 9014.50.214.85.3
Jun22° / 11°11615.9015.65.7
Jul24° / 13°11514.8015.36.2
Aug23° / 13°8512.40146.7
Sep19° / 649.70.112.46.0
Oct13° / 527.91.210.63.9
Nov / -1°356.63.99.20.9
Dec / -5°377.56.78.40.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35446
45446
55446
65446
75347
85347
95248
105248
115248
125149
135149
145050
155050
164951
174951
184753
194753
204654
214654
224555
234555
244456
254456
264456
274456
284357
294357
304456

Chance of precipitation in September

Any precipitationSnow

Piatra Neamţ gets around 64 mm of rain and snow over 9.7 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 32% and peaks near 37% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1370
2370
3360
4350
5350
6340
7330
8320
9320
10310
11310
12310
13300
14300
15300
16310
17310
18310
19310
20310
21310
22310
23311
24311
25311
26311
27301
28301
29301
30292

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
170264
273243
375223
478202
580182
682162
784151
886131
987121
1088111
1190100
129190
139280
149280
159370
169370
179370
189460
199460
209460
219460
229460
239460
249460
259550
269550
279550
289550
299550
309640

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 5:39 AM to 6:18 AM, and sunset from 6:50 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:396:50
213.15:406:48
313.15:426:46
413.05:436:44
513.05:446:42
612.95:466:40
712.85:476:38
812.85:486:36
912.75:506:33
1012.75:516:31
1112.65:526:29
1212.65:546:27
1312.55:556:25
1412.45:566:23
1512.45:586:21
1612.35:596:19
1712.36:006:17
1812.26:026:15
1912.26:036:13
2012.16:046:11
2112.06:066:08
2212.06:076:06
2311.96:096:04
2411.96:106:02
2511.86:116:00
2611.86:135:58
2711.76:145:56
2811.66:155:54
2911.66:175:52
3011.56:185:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.59 kWh/m².

For context, solar energy here swings from a low near 1.13 kWh/m² to a high of 5.52 kWh/m² in June across the year — September's 3.59 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.2Bright
34.2Bright
44.1Bright
54.1Bright
64.0Bright
74.0Bright
84.0Moderate
93.9Moderate
103.9Moderate
113.8Moderate
123.8Moderate
133.7Moderate
143.7Moderate
153.6Moderate
163.6Moderate
173.5Moderate
183.5Moderate
193.4Moderate
203.4Moderate
213.3Moderate
223.3Moderate
233.2Moderate
243.2Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.0Moderate
293.0Moderate
302.9Moderate
Planning a trip in September

Hazard calendar for Piatra Neamţ

In seasonPeak

In September, Piatra Neamţ sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Piatra Neamţ's rainy season runs April–September, when most of the year's rain falls.

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

Is September a good time to visit Piatra Neamţ?

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

6.0
Sightseeing
3rd-best month of the year
2.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Piatra Neamţ for sightseeing.

What to pack for Piatra Neamţ in September

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

In September, Piatra Neamţ sees daytime highs around 19°C and nights near 8°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Piatra Neamţ 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 Piatra Neamţ peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 8Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Piatra Neamţ in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Piatra Neamţ is worst in July — around 24 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 11 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Piatra Neamţ's WHO annual average of 18.3 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1523 µg/m³Dec 1412 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar22Moderate
Apr22Moderate
May20Moderate
Jun22Moderate
Jul24Moderate
Aug22Moderate
Sep17Moderate
Oct13Moderate
Nov14Moderate
Dec11Good
Location & terrain

Where is Piatra Neamţ?

Piatra Neamţ sits at 46.9°N, 26.3°E, 508 m above sea level, in Romania. The nearest listed city is Târgu Neamţ, 32 km away.

RomanPaşcaniMoineştiComăneştiBacăuFălticeni

Topography around Piatra Neamţ

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

Within 3 km, the terrain around Piatra Neamţ has significant variations in elevation — a maximum elevation change of 558 m around an average of 476 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,033 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,816 m.

The land around Piatra Neamţ is covered by trees (72%) within 3 km, trees (61%) within 16 km, and trees (52%), cropland (25%) and grassland (21%) within 80 km.

3 km
558 m
16 km
1,033 m
80 km
1,816 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Târgu Neamţ 32 km · Buhuşi 36 km · Roman 45 km · Paşcani 47 km · Moineşti 51 km · Comăneşti 56 km · Bacău 59 km · Fălticeni 59 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 Piatra Neamţ (46.9167°, 26.3333°, elevation 508 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).