Mendi weather in August

In August, Mendi sees average daytime highs of 20°C and overnight lows near 13°C, with 480 mm of rain across 29.6 wet days and about 11.8 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 0% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 11 h 42 min at the start of August to 11 h 54 min by month's end. Set against the rest of the year, August is Mendi's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Mendi's year-round climate.

Daytime high
20°
11th warmest
Overnight low
13°
4th coldest
Rainfall
480 mm
29.6 wet days
Daylight
11 h 48 min
6:36 AM – 6:23 PM
Cloud cover
90%
2nd clearest
Wind
4 km/h
2nd windiest
Solar energy
3.85 kWh/m²
Travel score
3.3
out of 10

Mendi is capital city of Southern Highlands, Papua New Guinea.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical August day in Mendi reaches about 20°C in the afternoon and slips back to 13°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 21°C. Set against its neighbours, August runs on par with July and on par with September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32013
42013
52013
62013
72013
82013
92013
102013
112013
122013
132013
142013
152013
162013
172013
182013
192013
202013
212013
222013
232013
242013
252013
262013
272013
282013
292013
302013
312013

Mendi weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 13°45029.412.33.4
Feb22° / 13°42726.812.23.4
Mar21° / 13°50429.9123.3
Apr21° / 14°58329.211.93.3
May21° / 13°55729.911.73.4
Jun20° / 13°46829.111.73.3
Jul20° / 13°41229.711.73.3
Aug20° / 13°48029.611.83.3
Sep20° / 13°56728.4123.4
Oct21° / 13°59128.712.13.5
Nov22° / 13°4862812.33.5
Dec22° / 13°45229.312.43.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 2% of August, with mostly cloudy or overcast conditions the remaining 98%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1199
2298
3298
4298
5298
6298
7298
8298
9298
10298
11298
12298
13397
14397
15397
16298
17298
18298
19298
20298
21298
22298
23298
24298
25298
26298
27298
28298
29298
30298
31298

Chance of precipitation in August

Any precipitation

Mendi gets around 480 mm of rain over 29.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 95% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
195
295
395
494
594
694
794
894
994
1094
1194
1294
1394
1495
1595
1695
1795
1896
1996
2096
2196
2297
2397
2497
2597
2697
2797
2896
2996
3096
3196

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
17894
27894
37903
48893
58893
68893
79883
89883
99883
109883
119883
129883
139883
149883
158893
168893
177903
187903
196913
206913
215923
225914
234924
244924
254924
264915
274915
284915
294915
304915
314906

Wind in August

Winds average 4 km/h in August.

Across August, 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 August

DaylightNight

Daylight runs from about 11 h 42 min at the start of August to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over August. Sunrise moves from 6:40 AM to 6:29 AM, and sunset from 6:23 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:406:23
211.76:396:23
311.76:396:23
411.76:396:23
511.76:396:24
611.86:396:24
711.86:386:24
811.86:386:24
911.86:386:24
1011.86:376:24
1111.86:376:24
1211.86:376:24
1311.86:376:24
1411.86:366:23
1511.86:366:23
1611.86:366:23
1711.86:356:23
1811.86:356:23
1911.86:346:23
2011.86:346:23
2111.86:346:23
2211.86:336:23
2311.86:336:23
2411.86:326:23
2511.86:326:23
2611.86:316:22
2711.96:316:22
2811.96:316:22
2911.96:306:22
3011.96:306:22
3111.96:296:22

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.85 kWh/m².

For context, solar energy here swings from a low near 3.57 kWh/m² to a high of 4.88 kWh/m² in November across the year — August's 3.85 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.6Moderate
43.6Moderate
53.7Moderate
63.7Moderate
73.7Moderate
83.7Moderate
93.7Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
214.0Moderate
224.0Moderate
234.0Moderate
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.1Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in August

Is August a good time to visit Mendi?

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

3.3
Sightseeing
8th-best month of the year
1.7
Beach & pool
11th-best month of the year

August is a weaker month for outdoor sightseeing in Mendi.

What to pack for Mendi in August

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

In August, Mendi sees daytime highs around 20°C and nights near 13°C. Pack rain gear. About 30 days see rain.

rain gear

UV index in Mendi in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mendi peaks around March 14 at about 18 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 14UV 18Jun 19UV 12
UV index (midday)Level
Jan17Extreme
Feb17Extreme
Mar18Extreme
Apr16Extreme
May14Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep16Extreme
Oct16Extreme
Nov16Extreme
Dec15Extreme
Location & terrain

Where is Mendi?

Mendi sits at 6.1°S, 143.7°E, 1,729 m above sea level, in Papua New Guinea. The nearest listed city is Mount Hagen, 71 km away.

GorokaMadangWewakDaruBuloloLaeMerauke

Topography around Mendi

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

Within 3 km, the terrain around Mendi has large variations in elevation — a maximum elevation change of 889 m around an average of 1,903 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,714 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,228 m.

The land around Mendi is covered by trees (63%) and grassland (33%) within 3 km, trees (80%) within 16 km, and trees (87%) within 80 km.

3 km
889 m
16 km
1,714 m
80 km
4,228 m
treesgrasslandartificial surfaceswetland
August weather nearby: Mount Hagen 71 km · Goroka 191 km · Madang 257 km · Wewak 289 km · Daru 330 km · Bulolo 350 km · Lae 375 km · Merauke 444 km

Papua New Guinea travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type I
240 V · 50 Hz
Prices
≈ 58% of US
price level, 2025
GDP per capita
$3,020
2025
Homicide rate
9.3
per 100k, 2010
Road deaths
12.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Protestant 64%Roman Catholic 26%other Christian 5%non-Christian 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 Mendi (-6.1475°, 143.6563°, elevation 1,729 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).