Is Zanzibar sunnier than Moroni?

Moroni is the sunnier: about 3,029 hours of sunshine a year versus 2,836 — a difference of 193 hours.

Which is warmer, Zanzibar or Moroni?

Zanzibar is warmer across the year: average daytime highs of 29°C (84°F) versus 27°C.

Which is better in winter (November–February), Zanzibar or Moroni?

Zanzibar scores better across November–February: 82/100 average versus 77, with daytime highs around 30°C.

Which has the warmer sea, Zanzibar or Moroni?

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

Zanzibar vs Moroni: which is sunnier?

🇹🇿 Tanzania vs 🇰🇲 Comoros · 739 km apart · long-term climate normals (NASA POWER, 2001–2020)

Moroni is the sunnier overall: about 3,029 hours of sunshine a year to Zanzibar's 2,836. Month by month it's balanced: each has the higher Sunshine Score in 3 months, with 6 within 2 points.

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

At a glance

	Zanzibar	Moroni
Sunshine hours / year	2,836	3,029
Sunniest month	July (93/100)	August (93/100)
Nov–Feb average score	82/100	77/100
Jun–Aug average score	92/100	91/100
Rain / year	1,009 mm	1,022 mm
Warmest sea	31°C / 88°F	31°C / 88°F
Peak midday UV	12 (extreme)	12 (extreme)

Zanzibar vs Moroni month by month

Month	Sunshine Score		Day high °C		Rain mm		Sea °C
Month	Zanzibar	Moroni	Zanzibar	Moroni	Zanzibar	Moroni	Zanzibar	Moroni
January	84	69	29°	28°	62	202	30°	30°
February	86	69	30°	28°	51	155	31°	30°
March	74	69	30°	28°	119	160	31°	31°
April	68	69	29°	28°	256	151	29°	30°
May	68	85	28°	28°	186	65	29°	29°
June	90	90	27°	27°	29	39	28°	28°
July	93	91	27°	26°	13	33	27°	27°
August	93	93	27°	25°	14	21	27°	27°
September	92	93	28°	26°	22	20	27°	27°
October	84	90	28°	27°	64	39	27°	28°
November	77	90	29°	28°	101	40	29°	29°
December	79	79	30°	28°	92	97	30°	30°

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

When to pick which

November–February: Zanzibar (average score 82/100 vs 77). Zanzibar is the warmer, around 30°C daytime highs vs 28°C.
March–May: Moroni (average score 74/100 vs 70). Daytime highs are similar (29°C vs 28°C).
June–August: too close to call — Zanzibar averages 92/100, Moroni 91/100. Daytime highs are similar (27°C vs 26°C).
September–October: Moroni (average score 92/100 vs 88). Daytime highs are similar (28°C vs 27°C).

Sea temperature

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

Full month-by-month guides: Zanzibar weather by month · Moroni weather by month · Best time to visit Tanzania.

More comparisons: Zanzibar vs Dar es Salaam · Zanzibar vs Mombasa · Zanzibar vs Arusha · Moroni vs Dar es Salaam · Moroni vs Antananarivo · Moroni vs Victoria · all head-to-heads