Is Georgetown sunnier than Cayenne?

They are nearly tied: Georgetown gets about 2,001 hours of sunshine a year and Cayenne about 2,049.

Which is warmer, Georgetown or Cayenne?

Year-round daytime highs are similar: Georgetown averages 29°C (84°F), Cayenne 28°C (82°F).

Which is better in winter (November–February), Georgetown or Cayenne?

They are close in the November–February window: Georgetown averages 65/100 (about 29°C days), Cayenne 65/100 (about 28°C).

Georgetown vs Cayenne: which is sunnier?

🇬🇾 Guyana vs 🇬🇫 French Guiana · 678 km apart · long-term climate normals (NASA POWER, 2001–2020)

Georgetown and Cayenne are virtually tied for annual sunshine — about 2,001 vs 2,049 hours a year. Cayenne has the higher Sunshine Score in 4 of 12 months, Georgetown 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

	Georgetown	Cayenne
Sunshine hours / year	2,001	2,049
Sunniest month	September (74/100)	September (81/100)
Nov–Feb average score	65/100	65/100
Jun–Aug average score	63/100	66/100
Rain / year	2,053 mm	2,872 mm
Peak midday UV	11 (extreme)	12 (extreme)

Georgetown vs Cayenne month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Georgetown	Cayenne	Georgetown	Cayenne	Georgetown	Cayenne
January	63	63	29°	27°	165	300
February	69	63	29°	27°	117	264
March	72	63	30°	28°	98	250
April	64	63	30°	28°	142	369
May	63	63	29°	28°	295	504
June	63	63	28°	28°	265	334
July	63	63	28°	28°	261	217
August	63	71	29°	28°	173	109
September	74	81	30°	29°	88	54
October	74	80	30°	30°	87	58
November	64	71	30°	29°	145	110
December	63	63	29°	28°	217	303

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

When to pick which

November–February: too close to call — Georgetown averages 65/100, Cayenne 65/100. Daytime highs are similar (29°C vs 28°C). See the winter sun ranking.
March–May: Georgetown (average score 66/100 vs 63). Georgetown is the warmer, around 30°C daytime highs vs 28°C.
June–August: Cayenne (average score 66/100 vs 63). Daytime highs are similar (28°C vs 28°C).
September–October: Cayenne (average score 81/100 vs 74). Daytime highs are similar (30°C vs 30°C).

Full month-by-month guides: Georgetown weather by month · Cayenne weather by month.

More comparisons: Georgetown vs Boa Vista · Georgetown vs Port of Spain · Cayenne vs Belém · Cayenne vs Macapá · all head-to-heads