Thành phố Sông Công weather in May

In May, Thành phố Sông Công sees average daytime highs of 31°C and overnight lows near 24°C, with 268 mm of rain across 19.7 wet days and about 13 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 30°C in the first days to 32°C by the end. The sky is clear or mostly clear about 10% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of May to 13 h 12 min by month's end. Set against the rest of the year, May is Thành phố Sông Công's 6th-clearest and 2nd-windiest month. For the whole year in context, see Thành phố Sông Công's year-round climate.

Daytime high
31°
5th warmest
Overnight low
24°
8th coldest
Rainfall
268 mm
19.7 wet days
Daylight
13 hours
5:22 AM – 6:24 PM
Cloud cover
77%
6th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.55 kWh/m²
Travel score
3.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 30°C in the first days to 32°C by the end.

A typical May day in Thành phố Sông Công reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 35°C. Set against its neighbours, May runs about 3°C warmer than April and about 1°C cooler than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43024
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153124
163124
173124
183125
193125
203125
213125
223125
233225
243225
253225
263225
273225
283225
293225
303225
313225

How May really feels in Thành phố Sông Công

Once humidity and wind are folded in, May averages 31 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
31
2 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Thành phố Sông Công weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 14°5911.210.85.7
Feb21° / 15°471111.35.8
Mar24° / 18°8214.911.85.7
Apr28° / 21°11714.812.55.0
May31° / 24°26819.7133.3
Jun33° / 26°34521.313.32.5
Jul32° / 26°35323.813.22.4
Aug32° / 26°38024.612.72.5
Sep31° / 25°2271912.13.4
Oct29° / 22°10712.211.55.3
Nov26° / 18°627.7117.0
Dec21° / 15°418.110.76.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22773
32773
42773
52872
62872
72872
82872
92872
102872
112773
122674
132674
142674
152476
162476
172377
182377
192377
202278
212278
222179
232179
241882
251882
261783
271783
281684
291585
301585
311486

Chance of precipitation in May

Any precipitation

Thành phố Sông Công gets around 268 mm of rain over 19.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 64% and peaks near 70% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
154
255
356
457
558
659
760
860
961
1062
1162
1263
1364
1464
1565
1665
1765
1865
1966
2066
2166
2266
2367
2467
2568
2668
2769
2869
2970
3070
3170

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
115173839
205173741
305163643
404163545
504153446
604153348
703143251
803143152
903143053
1003133054
1103132955
1202132956
1302122957
1402122957
1502122957
1601112959
1701112860
1801112860
1901102861
2001102762
2101102663
220192664
230092566
240082468
250082369
260072271
270062173
280062074
290051976
300051778
310041680

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
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
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 48 min at the start of May to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:30 AM to 5:18 AM, and sunset from 6:17 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:306:17
212.85:306:18
312.85:296:18
412.85:296:18
512.85:286:19
612.95:276:19
712.95:276:20
812.95:266:20
912.95:266:20
1012.95:256:21
1112.95:256:21
1213.05:246:22
1313.05:246:22
1413.05:236:23
1513.05:236:23
1613.05:226:24
1713.05:226:24
1813.05:216:24
1913.15:216:25
2013.15:216:25
2113.15:206:26
2213.15:206:26
2313.15:206:27
2413.15:196:27
2513.15:196:27
2613.15:196:28
2713.25:196:28
2813.25:196:29
2913.25:186:29
3013.25:186:30
3113.25:186:30

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.55 kWh/m².

For context, solar energy here swings from a low near 2.08 kWh/m² to a high of 4.68 kWh/m² in June across the year — May's 4.55 kWh/m² sits near the top of that range.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in May

Hazard calendar for Thành phố Sông Công

In seasonPeak

In May, Thành phố Sông Công sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Thành phố Sông Công's monsoon runs May–September, when most of the year's rain falls.

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

Is May a good time to visit Thành phố Sông Công?

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

3.3
Sightseeing
9th-best month of the year
5.0
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Thành phố Sông Công.

What to pack for Thành phố Sông Công in May

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

In May, Thành phố Sông Công sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Thành phố Sông Công in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thành phố Sông Công peaks around July 11 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJul 11UV 11Nov 23UV 6
UV index (midday)Level
Jan6High
Feb7High
Mar9Very high
Apr6High
May9Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep8Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Thành phố Sông Công in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Thành phố Sông Công is worst in December — around 102 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (July, 37 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 20102 µg/m³Jul 1738 µg/m³
PM2.5 (µg/m³)Level
Jan98Unhealthy
Feb89Unhealthy
Mar86Unhealthy
Apr79Unhealthy
May57Unhealthy
Jun44Poor
Jul37Poor
Aug44Poor
Sep59Unhealthy
Oct76Unhealthy
Nov92Unhealthy
Dec102Unhealthy
Location & terrain

Where is Thành phố Sông Công?

Thành phố Sông Công sits at 21.5°N, 105.8°E, 28 m above sea level, in Vietnam. The nearest listed city is Phổ Yên, 8.0 km away.

Topography around Thành phố Sông Công

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Thành phố Sông Công.

Within 3 km, the terrain around Thành phố Sông Công has only modest variations in elevation — a maximum elevation change of 66 m around an average of 24 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,304 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.

The land around Thành phố Sông Công is covered by trees (52%) and cropland (27%) within 3 km, trees (64%) and cropland (23%) within 16 km, and trees (69%) and cropland (21%) within 80 km.

3 km
66 m
16 km
1,304 m
80 km
1,720 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Phổ Yên 8.0 km · Thái Nguyên 13 km · Sóc Sơn 24 km · Thị Trấn Đại Từ 27 km · Phúc Yên 30 km · Vĩnh Yên 31 km · Quang Minh 33 km · Việt Yên 38 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 1%

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 Thành phố Sông Công (21.4772°, 105.8414°, elevation 28 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).