Is Port Moresby sunnier than Merauke?

They are nearly tied: Port Moresby gets about 2,354 hours of sunshine a year and Merauke about 2,324.

Which is warmer, Port Moresby or Merauke?

Port Moresby is warmer across the year: average daytime highs of 32°C (90°F) versus 30°C.

Which is better in winter (November–February), Port Moresby or Merauke?

They are close in the November–February window: Port Moresby averages 65/100 (about 32°C days), Merauke 66/100 (about 31°C).

Which has the warmer sea, Port Moresby or Merauke?

Both peak at about 31°C (88°F); month-by-month sea temperatures for both are on this page.

Port Moresby vs Merauke: which is sunnier?

🇵🇬 Papua New Guinea vs 🇮🇩 Indonesia · 754 km apart · long-term climate normals (NASA POWER, 2001–2020)

Port Moresby and Merauke are virtually tied for annual sunshine — about 2,354 vs 2,324 hours a year. Merauke has the higher Sunshine Score in 4 of 12 months, Port Moresby in 2 (6 within 2 points).

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Port Moresby	Merauke
Sunshine hours / year	2,354	2,324
Sunniest month	July (88/100)	August (86/100)
Nov–Feb average score	65/100	66/100
Jun–Aug average score	81/100	83/100
Rain / year	1,285 mm	1,890 mm
Warmest sea	31°C / 88°F	31°C / 88°F
Peak midday UV	11 (extreme)	11 (extreme)

Port Moresby vs Merauke month by month

Month	Sunshine Score		Day high °C		Rain mm		Sea °C
Month	Port Moresby	Merauke	Port Moresby	Merauke	Port Moresby	Merauke	Port Moresby	Merauke
January	65	65	31°	30°	225	319	31°	31°
February	65	65	30°	30°	153	291	30°	31°
March	65	65	30°	30°	292	359	31°	31°
April	67	65	31°	30°	139	249	31°	31°
May	79	66	31°	29°	75	146	28°	29°
June	80	79	32°	28°	69	72	27°	27°
July	88	84	32°	28°	24	48	26°	27°
August	76	86	33°	29°	42	37	26°	27°
September	68	86	34°	30°	40	33	26°	28°
October	59	82	35°	32°	47	56	27°	29°
November	64	67	34°	33°	70	96	29°	30°
December	65	65	33°	32°	109	184	31°	31°

The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May Port Moresby · Jun even · Jul Port Moresby · Aug Merauke · Sep Merauke · Oct Merauke · Nov Merauke · Dec even.

When to pick which

November–February: too close to call — Port Moresby averages 65/100, Merauke 66/100. Daytime highs are similar (32°C vs 31°C).
March–May: Port Moresby (average score 70/100 vs 65). Daytime highs are similar (31°C vs 30°C).
June–August: too close to call — Port Moresby averages 81/100, Merauke 83/100. Port Moresby is the warmer, around 32°C daytime highs vs 28°C.
September–October: Merauke (average score 84/100 vs 64). Port Moresby is the warmer, around 35°C daytime highs vs 31°C.

Sea temperature

Both seas peak at 31°C / 88°F. Swimmable water (21°C+): Port Moresby all year, Merauke all year. Month-by-month sea temperatures are in the table above.

Full month-by-month guides: Port Moresby weather by month · Merauke weather by month · Best time to visit Indonesia.

More comparisons: Port Moresby vs Jayapura · Port Moresby vs Cairns · Port Moresby vs Honiara · Merauke vs Jayapura · Merauke vs Wamena · all head-to-heads