Bahamas

Nassau in September: weather, sea & travel advice

This month's data profile

Rain shapes the decision

Nassau in September is climatically well suited to beach holidays. The average daily high is around 29 °C, and the sea is about 29 °C. With about 22 rainy days it is very wet.

Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.

Rank among 12 monthly averages

57/100 · #11

Warmth

Dryness

#11

Sun

Sea warmth

Published best categories: none

Nassau · SeptemberPhoto: JERRYE AND ROY KLOTZ MD · CC BY-SA 3.0

Average high: 29 °C
Average low: 28 °C
Sea: 29 °C
Rainy days (est.): 22 rainy days (est.)
Sun (est.): 7 h/day
Humidity: 77 %

Climate evidence with direct month comparison

The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.

Climate averages for Nassau: selected and adjacent months
Month	Avg high °C	Avg low °C	Rainy days (est.)	Precipitation mm	Sun h/day (est.)	Humidity %	Wind m/s	Sea °C	Score
August	29	29	23	139	7.6	77	4.2	30	55
September (selected)	29	28	22	151	6.7	77	4.1	29	57
October	28	27	18	117	5.7	77	5.0	28	64

How do the previous and next months compare?

Baseline: September (57/100)

Positive and negative values show the change from the selected month.

	Score Δ	Average high Δ	Average low Δ	Rainy days Δ	Rain Δ	Sun Δ	Humidity Δ	Wind Δ	Sea Δ
August	-2	+0.4 °C	+0.3 °C	+0.7	-12.1 mm	+0.9 h	-0.4 %	±0 m/s	+0.3 °C
October	+7	-1.2 °C	-1.2 °C	-4.3	-34.3 mm	-1 h	±0 %	+0.8 m/s	-0.9 °C

All twelve months in context

JanExcellent87 FebExcellent91 MarExcellent91 AprExcellent89 MayGood77 JunLimited62 JulLimited58 AugLimited55 SepLimited57 OctLimited64 NovExcellent82 DecExcellent87

Rainy days (estimated)

Sunshine hours (estimated)h/day

Average daily high°C

Sea temperature°C

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Where to stay in Nassau

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Useful next decisions

Nassau · Month by month

Key West · September Miami · September Honolulu · September Turks and Caicos · September

Frequently asked questions

How warm is Nassau in September?

The average daily high is around 29 °C, with an average daily low of about 28 °C.

Can you swim in Nassau in September?

The sea is about 29 °C (very warm).

Does it rain a lot in Nassau in September?

The curated estimate is about 22 rainy days per month, not a directly measured long-term average. Total precipitation averages around 151 mm for the month. A rainy day does not mean all-day rain.

When is the best time to visit Nassau?

By the climate score, January, February, March and April are the strongest months for Nassau. For a beach trip: February, March, April and December. September is not among them.