Port Moresby weather in July

In July, Port Moresby sees average daytime highs of 28°C and overnight lows near 23°C, with 29 mm of rain across 5.2 wet days and about 11.5 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 17% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 11 h 30 min at the start of July to 11 h 36 min by month's end. Set against the rest of the year, July is Port Moresby's 2nd-clearest and 1st-windiest month. For the whole year in context, see Port Moresby's year-round climate.

Daytime high
28°
12th warmest
Overnight low
23°
2nd coldest
Rainfall
29 mm
5.2 wet days
Daylight
11 h 30 min
6:32 AM – 6:02 PM
Cloud cover
67%
2nd clearest
Wind
17 km/h
1st windiest
Solar energy
4.41 kWh/m²
Travel score
6.8
out of 10

Port Moresby is capital of Papua New Guinea.

Density
1,182/km²
people per km²
Founded
1873

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical July day in Port Moresby reaches about 28°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, July runs on par with June and on par with August.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12823
22823
32823
42823
52823
62823
72823
82823
92823
102823
112823
122823
132823
142823
152823
162823
172823
182823
192823
202823
212823
222823
232723
242723
252723
262723
272723
282723
292723
302723
312722

How July really feels in Port Moresby

Once humidity and wind are folded in, July 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

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

Port Moresby weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°22922.912.53.4
Feb29° / 24°19520.912.33.4
Mar29° / 24°27624.912.13.4
Apr29° / 24°17720.211.84.0
May29° / 24°8112.211.65.2
Jun28° / 23°518.611.56.2
Jul28° / 23°295.211.56.8
Aug28° / 23°346.411.76.8
Sep28° / 23°457.811.95.9
Oct29° / 24°621112.25.2
Nov30° / 24°11015.512.44.4
Dec30° / 24°17021.212.53.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33466
43565
53565
63664
73664
83664
93664
103664
113664
123565
133763
143763
153664
163763
173862
183862
193862
203763
213763
223862
233862
243763
253763
263862
273862
283862
293961
303961
313961

Chance of precipitation in July

Any precipitation

Port Moresby gets around 29 mm of rain over 5.2 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
123
222
321
420
520
619
718
818
918
1018
1117
1217
1317
1417
1517
1617
1717
1817
1917
2017
2117
2217
2317
2417
2518
2618
2719
2820
2921
3021
3122

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1227692
2228691
3228691
4329671
5329671
6329680
7330670
8330670
9330670
10330670
11330670
12330670
13430660
14431650
15431650
16432640
17533620
18534610
19535600
20636580
21637570
22638560
23739540
24740530
25740530
26841510
27841510
28841510
29940510
30940510
311039510

Wind in July

Winds average 17 km/h in July, the windiest month of the year.

Across July, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 11 h 30 min at the start of July to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over July. Sunrise moves from 6:31 AM to 6:30 AM, and sunset from 5:58 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:315:58
211.56:315:59
311.56:315:59
411.56:325:59
511.56:325:59
611.56:326:00
711.56:326:00
811.56:326:00
911.56:326:00
1011.56:326:00
1111.56:326:01
1211.56:326:01
1311.56:326:01
1411.56:326:01
1511.56:326:02
1611.56:326:02
1711.56:326:02
1811.56:326:02
1911.56:326:03
2011.56:326:03
2111.56:326:03
2211.56:326:03
2311.56:326:03
2411.56:326:04
2511.56:316:04
2611.56:316:04
2711.56:316:04
2811.66:316:04
2911.66:316:04
3011.66:316:05
3111.66:306:05

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.41 kWh/m².

For context, solar energy here swings from a low near 4.29 kWh/m² to a high of 5.92 kWh/m² in November across the year — July's 4.41 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in July

Hazard calendar for Port Moresby

In seasonPeak

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

Port Moresby sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Port Moresby's monsoon runs December–April, when most of the year's rain falls.

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

Is July a good time to visit Port Moresby?

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

6.8
Sightseeing
1st-best month of the year
7.1
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Port Moresby for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Port Moresby in July

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

In July, Port Moresby sees daytime highs around 28°C and nights near 23°C. Pack light clothes. About 5 days see rain.

light clothes

Sea temperature near Port Moresby in July

The nearest coast averages about 26°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in January at about 29°C and coldest in August near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov27Warm
Dec29Tropical

UV index in Port Moresby in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Port Moresby peaks around March 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 10UV 16Jun 20UV 9
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun9Very high
Jul10Very high
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Port Moresby?

Port Moresby sits at 9.5°S, 147.2°E, 25 m above sea level, in Papua New Guinea. The nearest listed city is Popondetta, 143 km away.

PopondettaBuloloLaeGorokaDaruMadangMount HagenMendi

Topography around Port Moresby

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

Within 3 km, the terrain around Port Moresby has only modest variations in elevation — a maximum elevation change of 229 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 402 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,978 m.

The land around Port Moresby is covered by water (69%) within 3 km, water (53%) and grassland (24%) within 16 km, and trees (55%) and water (37%) within 80 km.

3 km
229 m
16 km
402 m
80 km
3,978 m
treesgrasslandartificial surfacesbare terrainwatermangroves
July weather nearby: Popondetta 143 km · Bulolo 259 km · Lae 307 km · Goroka 424 km · Daru 435 km · Madang 497 km · Mount Hagen 515 km · Mendi 534 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 Port Moresby (-9.4772°, 147.1509°, elevation 25 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).