Best time to cruise · Shoulder season
Western Caribbean cruises in September
Belize celebrates its September Celebrations, from St. George’s Caye Day on the 10th to Independence Day on the 21st, and Mexico marks Independence Day on the 16th with fireworks the night before. It’s peak storm season and the rainiest stretch, but also the quietest month on board, with the lowest fares from Texas.
- Shoulder season
- Avg high 86°F
- 12 hrs daylight
Photo: AMAPO, CC BY-SA 3.0, via Wikimedia Commons
Western Caribbean in September: Shoulder season
Belize celebrates its September Celebrations, from St. George’s Caye Day on the 10th to Independence Day on the 21st, and Mexico marks Independence Day on the 16th with fireworks the night before. It’s peak storm season and the rainiest stretch, but also the quietest month on board, with the lowest fares from Texas.
Across Western Caribbean cruise ports, September brings average highs around 86°F (30°C) and lows near 83°F, with about 7 inches of rain over the month and roughly 12 hours of daylight.
- Verdict
- Shoulder season
- Season
- Year-round; driest December to April. Rainy season and hurricane risk June to November, peaking August to October.
- Average high / low
- 86°F / 83°F
- Rainfall (month)
- 7 in
- Daylight
- About 12 hours
- Typical cruise length
- 4 to 5 nights for short trips; 7 nights for the classic route
What to pack: light, breathable clothes, swimwear, a sun hat, sunglasses and reef-safe sunscreen, plus a light layer for air-conditioned rooms. It's one of the wetter months, so bring a compact umbrella or rain jacket.
How September compares with the rest of the year
- Jan: Best time to go
- Feb: Best time to go
- Mar: Best time to go
- Apr: Best time to go
- May: Good time to go
- Jun: Good time to go
- Jul: Good time to go
- Aug: Shoulder season
- Sep: Shoulder season
- Oct: Shoulder season
- Nov: Good time to go
- Dec: Best time to go
- No regular sailings
- Shoulder season
- Good time to go
- Best time to go
Western Caribbean weather in September
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F (°C) | 8027 | 8127 | 8228 | 8429 | 8530 | 8530 | 8630 | 8630 | 8630 | 8529 | 8328 | 8228 |
| Low °F (°C) | 7624 | 7625 | 7725 | 7926 | 8127 | 8228 | 8228 | 8228 | 8328 | 8228 | 7926 | 7825 |
| Rain in (mm) | 3.897 | 2.358 | 2.565 | 2.769 | 5.5140 | 9.1231 | 6.0151 | 6.8172 | 7.0177 | 9.1231 | 8.8224 | 4.8121 |
| Daylight (hrs) | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 11 | 11 |
September weather port by port
| Port | Avg high | Avg low | Rain | Daylight |
|---|---|---|---|---|
| Cozumel | 86°F | 82°F | 5.9 in | 12 h |
| Costa Maya | 86°F | 83°F | 5.5 in | 12 h |
| Roatán | 85°F | 84°F | 7.4 in | 12 h |
| Belize City | 86°F | 82°F | 7.2 in | 12 h |
| Grand Cayman | 86°F | 84°F | 3.5 in | 12 h |
| Progreso | 85°F | 81°F | 4.7 in | 12 h |
| Falmouth | 89°F | 82°F | 5.7 in | 12 h |
| Ocho Rios | 87°F | 83°F | 5.4 in | 12 h |
| Key West | 86°F | 84°F | 9.1 in | 12 h |
| Harvest Caye | 85°F | 83°F | 8.9 in | 12 h |
| Montego Bay | 89°F | 83°F | 5.7 in | 12 h |
| Puerto Limón | 85°F | 79°F | 14.9 in | 12 h |
Average daily highs and lows, 2015–2024, from NASA POWER, adjusted to sea level. Rain is the average monthly total.
Other great cruise destinations in September
- Hawaii in September
- Canada & New England in September
- Pacific Coastal in September
- Mediterranean in September
- Western Mediterranean in September
- Eastern Mediterranean & Adriatic in September
- Greek Isles in September
- Western Europe in September
- Tahiti & the South Pacific in September
- Danube River in September
See every destination for September, with a port weather map →
Western Caribbean in September: FAQs
Is September a good time to cruise Western Caribbean?
It can be, as a shoulder-season month. Belize celebrates its September Celebrations, from St. George’s Caye Day on the 10th to Independence Day on the 21st, and Mexico marks Independence Day on the 16th with fireworks the night before. It’s peak storm season and the rainiest stretch, but also the quietest month on board, with the lowest fares from Texas.
What is the weather like on a Western Caribbean cruise in September?
Across Western Caribbean cruise ports, September brings average highs around 86°F (30°C) and lows near 83°F, with about 7 inches of rain over the month and roughly 12 hours of daylight. Conditions vary from port to port and day to day.
What should I pack for a Western Caribbean cruise in September?
Pack light, breathable clothes, swimwear, a sun hat, sunglasses and reef-safe sunscreen, plus a light layer for air-conditioned rooms. It's one of the wetter months, so bring a compact umbrella or rain jacket. Check your cruise line's dress code for evenings.
When is the best time to cruise Western Caribbean?
Year-round; driest December to April. Rainy season and hurricane risk June to November, peaking August to October.. The best months are usually January, February, March, April, December.
Where else can I cruise in September?
September is also a top month for Hawaii, Canada & New England, Pacific Coastal, Mediterranean, Western Mediterranean.
Updated November 2026 by the BookMyDreamCruise editorial team. How we research and fact-check.
Sources: NASA POWER climate data.