Diadi weather in January

In January, Diadi sees average daytime highs of 24°C and overnight lows near 18°C, with 209 mm of rain across 21.2 wet days and about 11.1 hours of daylight. It is the 12th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 10% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 hours at the start of January to 11 h 12 min by month's end. Set against the rest of the year, January is Diadi's 7th-clearest and 6th-windiest month. For the whole year in context, see Diadi's year-round climate.

Daytime high
24°
12th warmest
Overnight low
18°
1st coldest
Rainfall
209 mm
21.2 wet days
Daylight
11 h 06 min
6:31 AM – 5:37 PM
Cloud cover
74%
7th clearest
Wind
4 km/h
6th windiest
Solar energy
3.43 kWh/m²
Travel score
5.1
out of 10

Diadi is municipality of the Philippines in the province of Nueva Vizcaya.

Density
86/km²
people per km²
Founded
1967

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 24°C through the month.

A typical January day in Diadi reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12419
22419
32419
42418
52418
62418
72418
82418
92418
102418
112418
122418
132418
142418
152418
162418
172418
182418
192418
202418
212418
222418
232418
242418
252418
262418
272418
282418
292418
302418
312418

How January really feels in Diadi

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.

Diadi 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
Jan24° / 18°20921.211.15.1
Feb25° / 18°17618.211.45.2
Mar27° / 19°15415.811.95.8
Apr29° / 21°13914.312.45.2
May30° / 21°36219.312.83.8
Jun31° / 22°26519.6133.4
Jul30° / 22°39924.412.93.2
Aug30° / 22°48926.412.63.0
Sep29° / 22°45525.412.13.3
Oct28° / 21°27020.711.64.5
Nov26° / 20°19316.811.25.4
Dec25° / 19°25820.7115.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32575
42575
52674
62575
72575
82674
92674
102674
112674
122674
132674
142674
152575
162575
172476
182476
192476
202476
212377
222377
232377
242377
252377
262377
272476
282476
292377
302377
312377

Chance of precipitation in January

Any precipitation

Diadi gets around 209 mm of rain over 21.2 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 69% and peaks near 73% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
168
267
367
467
566
666
766
866
966
1066
1166
1266
1366
1467
1567
1667
1768
1868
1969
2069
2170
2270
2371
2471
2571
2672
2772
2872
2972
3073
3173

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1431632
2432622
3532612
4532612
5533602
6533602
7534592
8534592
9535582
10535582
11535582
12535582
13535582
14535582
15536572
16536572
17436582
18436582
19436582
20436582
21436582
22436582
23436582
24436582
25436582
26536572
27536572
28536572
29536572
30536572
31535582

Wind in January

Winds average 4 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 hours at the start of January to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:27 AM to 6:30 AM, and sunset from 5:28 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:275:28
211.06:285:29
311.06:285:29
411.06:285:30
511.06:285:31
611.06:295:31
711.06:295:32
811.06:295:32
911.16:305:33
1011.16:305:33
1111.16:305:34
1211.16:305:35
1311.16:305:35
1411.16:315:36
1511.16:315:36
1611.16:315:37
1711.16:315:38
1811.16:315:38
1911.16:315:39
2011.16:315:39
2111.16:315:40
2211.26:315:40
2311.26:315:41
2411.26:315:42
2511.26:315:42
2611.26:315:43
2711.26:315:43
2811.26:315:44
2911.26:315:44
3011.26:315:45
3111.26:305:45

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.43 kWh/m².

For context, solar energy here swings from a low near 2.89 kWh/m² to a high of 5.81 kWh/m² in April across the year — January's 3.43 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.2Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.6Moderate
303.6Moderate
313.6Moderate
Planning a trip in January

Is January a good time to visit Diadi?

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

5.1
Sightseeing
5th-best month of the year
4.3
Beach & pool
10th-best month of the year

January is a reasonable time to visit Diadi for sightseeing.

What to pack for Diadi in January

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

In January, Diadi sees daytime highs around 24°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 21 days see rain.

rain gearlight clothes

UV index in Diadi in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Diadi peaks around August 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 17UV 14Dec 13UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Diadi 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 Diadi is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1616 µg/m³Dec 1611 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar15Moderate
Apr17Moderate
May14Moderate
Jun13Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Diadi?

Diadi sits at 16.7°N, 121.4°E, 276 m above sea level, in Philippines. The nearest listed city is Ramon, 20 km away.

Topography around Diadi

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

Within 3 km, the terrain around Diadi has significant variations in elevation — a maximum elevation change of 268 m around an average of 276 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 829 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,878 m.

The land around Diadi is covered by trees (62%) and cropland (24%) within 3 km, trees (47%) and grassland (31%) within 16 km, and trees (71%) within 80 km.

3 km
268 m
16 km
829 m
80 km
2,878 m
treesgrasslandcroplandwater
January weather nearby: Ramon 20 km · Santiago 21 km · Lagawe 27 km · Solano 30 km · San Mateo 30 km · Baggabag B 30 km · Bayombong 35 km · Alicia 37 km

Philippines travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 60 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$4,171
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
4.3
per 100k, 2023
Road deaths
12
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 569
Religion
Roman Catholic 79%other 8%Muslim 6%other Christian 4%

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 Diadi (16.7262°, 121.3589°, elevation 276 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).