Nā’īn weather in January

In January, Nā’īn sees average daytime highs of 8°C and overnight lows near -1°C, with 21 mm of precipitation across 4.8 wet days and about 10.1 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 8°C through the month. The sky is clear or mostly clear about 60% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of January to 10 h 24 min by month's end. Set against the rest of the year, January is Nā’īn's 9th-clearest and 8th-windiest month. For the whole year in context, see Nā’īn's year-round climate.

Daytime high
12th warmest
Overnight low
-1°
1st coldest
Precipitation
21 mm
4.8 wet days
Daylight
10 h 06 min
7:05 AM – 5:09 PM
Cloud cover
35%
9th clearest
Wind
12 km/h
8th windiest
Solar energy
3.68 kWh/m²
Travel score
1.8
out of 10

Nā’īn is city in Isfahan Province, Iran.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 8°C through the month.

A typical January day in Nā’īn reaches about 8°C in the afternoon and slips back to -1°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 2°C and 14°C. Set against its neighbours, January runs about 2°C cooler than December and about 3°C cooler than February.

-10°10°20°151015202531
Avg high (°C)Avg low (°C)
1100
290
39-1
49-1
59-1
69-1
79-1
88-1
98-1
108-1
118-1
128-2
138-2
148-2
158-2
168-2
178-2
188-2
198-2
208-2
218-2
228-2
238-2
248-2
258-1
268-1
278-1
289-1
299-1
309-1
319-1

How January really feels in Nā’īn

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Nā’īn weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°214.82.910.11.8
Feb11° / 184.41.610.83.4
Mar16° / 275.50.811.85.9
Apr22° / 11°256.10.112.87.4
May27° / 16°164.3013.77.3
Jun33° / 21°10.3014.15.0
Jul34° / 23°00.1013.93.8
Aug33° / 21°00.1013.24.7
Sep30° / 17°00012.27.1
Oct23° / 11°51.7011.28.8
Nov15° / 163.60.510.35.7
Dec10° / 163.81.59.93.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 27%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27426
37525
47327
57327
67327
77327
87228
97228
107228
117129
127129
137129
147129
157129
167228
177228
187228
197228
207228
217327
227426
237426
247426
257525
267525
277525
287624
297624
307624
317723

Chance of precipitation in January

Any precipitationSnow

Nā’īn gets around 21 mm of rain and snow over 4.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 15% and peaks near 18% on the wettest days, and about 3 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1116
2116
3127
4137
5138
6149
7149
81510
91610
101610
111611
121711
131711
141812
151812
161812
171812
181812
191711
201711
211710
221610
231610
24169
25159
26159
27158
28158
29148
30148
31147

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1912calm
2012calm
2112calm
2212calm
2312light breeze
2412light breeze
2512light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 54 min at the start of January to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over January. Sunrise moves from 7:05 AM to 7:00 AM, and sunset from 4:57 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:054:57
29.97:054:58
39.97:054:58
49.97:054:59
59.97:055:00
69.97:065:00
79.97:065:01
89.97:065:02
99.97:065:03
1010.07:065:04
1110.07:065:04
1210.07:065:05
1310.07:065:06
1410.07:065:07
1510.07:055:08
1610.17:055:09
1710.17:055:09
1810.17:055:10
1910.17:055:11
2010.17:045:12
2110.17:045:13
2210.27:045:14
2310.27:035:15
2410.27:035:16
2510.27:035:17
2610.37:025:18
2710.37:025:19
2810.37:015:19
2910.37:015:20
3010.47:005:21
3110.47:005:22

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.68 kWh/m².

For context, solar energy here swings from a low near 3.31 kWh/m² to a high of 7.98 kWh/m² in June across the year — January's 3.68 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.4Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.8Moderate
203.8Moderate
213.8Moderate
223.9Moderate
233.9Moderate
243.9Moderate
254.0Moderate
264.0Moderate
274.0Bright
284.1Bright
294.1Bright
304.1Bright
314.2Bright
Planning a trip in January

Hazard calendar for Nā’īn

In seasonPeak

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

Nā’īn sees seasonal dust haze (July), heaviest in July.

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

Is January a good time to visit Nā’īn?

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

1.8
Sightseeing
12th-best month of the year
0.0
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Nā’īn.

What to pack for Nā’īn in January

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

In January, Nā’īn sees daytime highs around 8°C and nights near -1°C. Pack a warm layer. About 5 days see rain.

a warm layer

UV index in Nā’īn in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nā’īn peaks around July 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 18UV 11Jan 12UV 3
UV index (midday)Level
Jan3Moderate
Feb6High
Mar6High
Apr8Very high
May10Very high
Jun10Very high
Jul11Extreme
Aug10Extreme
Sep8Very high
Oct7High
Nov4Moderate
Dec4Moderate

Air quality in Nā’īn in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Nā’īn is worst in July — around 31 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 13 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 930 µg/m³Dec 1013 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr30Moderate
May30Moderate
Jun24Moderate
Jul31Moderate
Aug21Moderate
Sep23Moderate
Oct18Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Nā’īn?

Nā’īn sits at 32.9°N, 53.1°E, 1,564 m above sea level, in Iran. The nearest listed city is Ardestān, 88 km away.

ArdakānMeybodBahārestānDowlatābādNaţanzDastgerdIsfahan

Topography around Nā’īn

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

Within 3 km, the terrain around Nā’īn has only modest variations in elevation — a maximum elevation change of 92 m around an average of 1,562 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 656 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,344 m.

The land around Nā’īn is covered by bare terrain (69%) and artificial surfaces (22%) within 3 km, bare terrain (98%) within 16 km, and bare terrain (99%) within 80 km.

3 km
92 m
16 km
656 m
80 km
2,344 m
croplandartificial surfacesbare terrain
January weather nearby: Ardestān 88 km · Ardakān 106 km · Meybod 110 km · Bahārestān 130 km · Dowlatābād 130 km · Naţanz 131 km · Dastgerd 133 km · Isfahan 134 km

Iran travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 352% of US
price level, 2025
GDP per capita
$3,924
2025
Happiness
5.2 / 10
World Happiness, 2025
Safe drinking water
94%
of population, 2024
Homicide rate
2.4
per 100k, 2014
Road deaths
21.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 492
Religion
Muslim 99%Christian 1%Baha'i 0%agnostic 0%

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 Nā’īn (32.8601°, 53.0875°, elevation 1,564 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).