Is Port Moresby sunnier than Honiara?

Port Moresby is the sunnier: about 2,354 hours of sunshine a year versus 2,179 — a difference of 175 hours.

Which is warmer, Port Moresby or Honiara?

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 Honiara?

They are close in the November–February window: Port Moresby averages 65/100 (about 32°C days), Honiara 64/100 (about 30°C).

Which has the warmer sea, Port Moresby or Honiara?

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

Port Moresby vs Honiara: which is sunnier?

🇵🇬 Papua New Guinea vs 🇸🇧 Solomon Islands · 1,408 km apart · long-term climate normals (NASA POWER, 2001–2020)

Port Moresby is the sunnier overall: about 2,354 hours of sunshine a year to Honiara's 2,179. Port Moresby has the higher Sunshine Score in 5 of 12 months, Honiara in 2 (5 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	Honiara
Sunshine hours / year	2,354	2,179
Sunniest month	July (88/100)	September (72/100)
Nov–Feb average score	65/100	64/100
Jun–Aug average score	81/100	68/100
Rain / year	1,285 mm	2,326 mm
Warmest sea	31°C / 88°F	31°C / 88°F
Peak midday UV	11 (extreme)	12 (extreme)

Port Moresby vs Honiara month by month

Month	Sunshine Score		Day high °C		Rain mm		Sea °C
Month	Port Moresby	Honiara	Port Moresby	Honiara	Port Moresby	Honiara	Port Moresby	Honiara
January	65	64	31°	30°	225	263	31°	31°
February	65	64	30°	30°	153	305	30°	30°
March	65	64	30°	30°	292	277	31°	31°
April	67	64	31°	30°	139	220	31°	31°
May	79	64	31°	30°	75	214	28°	30°
June	80	65	32°	29°	69	143	27°	30°
July	88	67	32°	29°	24	135	26°	30°
August	76	71	33°	29°	42	114	26°	29°
September	68	72	34°	30°	40	107	26°	29°
October	59	64	35°	30°	47	160	27°	30°
November	64	64	34°	30°	70	167	29°	30°
December	65	64	33°	30°	109	221	31°	31°

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

When to pick which

November–February: too close to call — Port Moresby averages 65/100, Honiara 64/100. Port Moresby is the warmer, around 32°C daytime highs vs 30°C.
March–May: Port Moresby (average score 70/100 vs 64). Daytime highs are similar (31°C vs 30°C).
June–August: Port Moresby (average score 81/100 vs 68). Port Moresby is the warmer, around 32°C daytime highs vs 29°C.
September–October: Honiara (average score 68/100 vs 64). Port Moresby is the warmer, around 35°C daytime highs vs 30°C.

Sea temperature

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

Full month-by-month guides: Port Moresby weather by month · Honiara weather by month.

More comparisons: Port Moresby vs Jayapura · Port Moresby vs Cairns · Port Moresby vs Merauke · Honiara vs South Tarawa · Honiara vs Port Vila · Honiara vs Luganville · all head-to-heads