Siraha weather in January

In January, Siraha sees average daytime highs of 23°C and overnight lows near 10°C, with 12 mm of rain across 1.6 wet days and about 10.5 hours of daylight. It is the 12th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 73% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of January to 10 h 42 min by month's end. Set against the rest of the year, January is Siraha's 6th-clearest and 9th-windiest month. For the whole year in context, see Siraha's year-round climate.

Daytime high
23°
12th warmest
Overnight low
10°
1st coldest
Rainfall
12 mm
1.6 wet days
Daylight
10 h 30 min
6:55 AM – 5:24 PM
Cloud cover
27%
6th clearest
Wind
6 km/h
9th windiest
Solar energy
3.93 kWh/m²
Travel score
8.7
out of 10

Siraha is municipality in Siraha District, Nepal.

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 23°C through the month.

A typical January day in Siraha reaches about 23°C in the afternoon and slips back to 10°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°C. Set against its neighbours, January runs about 2°C cooler than December and about 4°C cooler than February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12310
22310
32310
42210
52210
62210
72210
82210
92210
102210
112210
122210
132210
142210
152210
162210
172210
182210
192210
202210
212310
222310
232311
242311
252311
262311
272311
282311
292411
302411
312411

How January really feels in Siraha

Once humidity and wind are folded in, January 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

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

Siraha weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 10°121.610.58.7
Feb26° / 13°111.611.18.4
Mar32° / 18°112.411.85.0
Apr36° / 23°265.312.62.5
May36° / 25°8511.713.32.2
Jun34° / 26°22920.813.62.3
Jul32° / 26°39326.413.52.5
Aug32° / 26°25826.112.92.5
Sep31° / 25°22021.312.23.2
Oct31° / 21°50511.45.5
Nov28° / 16°20.310.77.9
Dec24° / 12°40.610.49.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18911
28911
38812
48812
58812
68812
78812
88812
98812
108713
118713
128713
138713
148713
158713
168614
178614
188614
198614
208614
218515
228515
238515
248515
258515
268515
278515
288515
298515
308515
318614

Chance of precipitation in January

Any precipitation

Siraha gets around 12 mm of rain over 1.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 5% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
284
294
304
314

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

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19190
29280
39280
49280
59370
69370
79370
89370
99370
109370
119370
129280
139280
149280
159190
169190
1790100
1889110
1989110
2088120
2188120
2287130
2387130
2486140
2586140
2685150
2784160
2884160
2982171
3081181
3180191

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 24 min at the start of January to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:53 AM to 6:51 AM, and sunset from 5:14 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.46:535:14
210.46:535:15
310.46:535:15
410.46:545:16
510.46:545:16
610.46:545:17
710.46:545:18
810.46:545:19
910.46:545:19
1010.46:545:20
1110.46:555:21
1210.46:555:21
1310.56:555:22
1410.56:555:23
1510.56:555:24
1610.56:555:24
1710.56:555:25
1810.56:545:26
1910.56:545:27
2010.66:545:27
2110.66:545:28
2210.66:545:29
2310.66:545:30
2410.66:535:30
2510.66:535:31
2610.66:535:32
2710.76:535:33
2810.76:525:33
2910.76:525:34
3010.76:525:35
3110.76:515:36

Solar energy in January

Daily solar energy (kWh/m²)

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

For context, solar energy here swings from a low near 3.7 kWh/m² to a high of 6.49 kWh/m² in April across the year — January's 3.93 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
164.0Moderate
174.0Moderate
184.0Moderate
194.0Moderate
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in January

Hazard calendar for Siraha

In seasonPeak

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

Siraha's monsoon runs June–September, when most of the year's rain falls.

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

Is January a good time to visit Siraha?

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

8.7
Sightseeing
2nd-best month of the year
6.5
Beach & pool
6th-best month of the year

January is one of the better times to visit Siraha for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Siraha in January

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

In January, Siraha sees daytime highs around 23°C and nights near 10°C. Worth packing: light clothes.

light clothes

UV index in Siraha in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siraha peaks around July 19 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 18 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highExtremeVery highModerateJul 19UV 11Jan 18UV 4
UV index (midday)Level
Jan4Moderate
Feb4Moderate
Mar9Very high
Apr7Very high
May8Very high
Jun7High
Jul12Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec4Moderate

Air quality in Siraha 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 Siraha is worst in January — around 169 µg/m³ PM2.5 (very unhealthy), about 4.9× the cleanest month (July, 35 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyJan 12167 µg/m³Jul 2036 µg/m³
PM2.5 (µg/m³)Level
Jan169Very unhealthy
Feb138Unhealthy
Mar107Unhealthy
Apr87Unhealthy
May70Unhealthy
Jun57Unhealthy
Jul35Moderate
Aug43Poor
Sep55Unhealthy
Oct87Unhealthy
Nov125Unhealthy
Dec160Very unhealthy
Location & terrain

Where is Siraha?

Siraha sits at 26.7°N, 86.2°E, 82 m above sea level, in Nepal. The nearest listed city is Lahān, 28 km away.

TriyugaRājbirājMalaṅgawāGaurInaruwa

Topography around Siraha

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

Within 3 km, the terrain around Siraha has only modest variations in elevation — a maximum elevation change of 15 m around an average of 75 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,775 m.

The land around Siraha is covered by cropland (67%) within 3 km, cropland (78%) within 16 km, and cropland (54%) and trees (38%) within 80 km.

3 km
15 m
16 km
67 m
80 km
2,775 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Lahān 28 km · Janakpur 29 km · Jaleshwar 41 km · Triyuga 51 km · Rājbirāj 55 km · Malaṅgawā 68 km · Gaur 93 km · Inaruwa 94 km

Nepal travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / D / M
230 V · 50 Hz
Prices
≈ 24% of US
price level, 2025
GDP per capita
$1,536
2025
Happiness
5.1 / 10
World Happiness, 2025
Safe drinking water
16%
of population, 2024
Homicide rate
2.1
per 100k, 2020
Road deaths
16.3
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 514
Religion
Hindu 81%Buddhist 8%Muslim 5%Kirat 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 Siraha (26.6542°, 86.2079°, elevation 82 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).