Kollam in September
Kerala, India
Monsoon showers disrupt daily plans though backwater cruises still operate between downpours
September in Kollam is the trickle back. Rainfall drops to 350-400mm across 16-18 wet days, mostly first half. Daytime 25-30C, humidity easing toward 80 percent. Southwest monsoon retreats from Kerala around September 25-30 (IMD declares formal withdrawal). Aranmula Boat Race on the Pampa River (early September during Onam tail, religious vallam kali, Aranmula Parthasarathy Temple festival) lands on Uthrattadi day — verify exact date via Kerala Tourism. SWTD Kollam-Alleppey cruise returns to daily 10:30am schedule from mid-month. Munroe Island canoes reopen October 1 (Munroe Island Tourism Society rule). Houseboat overnight cruises return to full schedule. Hotel rates climb 15-20 percent versus August lows: Raviz Resort Kollam ₹9-15k, Holiday Inn Express ₹4-7k, Nani Hotel Kollam ₹2-3k. The full clean cruising-and-canoe window opens from October 5-15 onward.
Why September scores 6.0/10
Weather
Monsoon retreat. 25-30C, 350-400mm rain. SWTD cruise rebuilding. Munroe canoes reopen Oct 1.
Who should go
- ✓First-time travelers
- ✓Senior citizens
- ✓Families with children
- ✓Remote workers (network available)
Who should think twice
- ✗Clear-weather seekers
- ✗Daytime cruisers
All 12 Months
| Month | Score | Note |
|---|---|---|
| January | 10.0/10 | Peak window. 23-31C, dry. Ashtamudi Lake calm. Kollam-Alleppey 8-hour SWTD cruise daily. |
| February | 10.0/10 | Driest month. 24-32C. Munroe Island canoe trips at year-best. SWTD cruise daily. |
| March | 8.0/10 | Last cool month. 25-33C. Hotel rates slide 20 percent. SWTD cruise daily. |
| April | 6.0/10 | Pre-monsoon heat. 27-34C, humidity 80 percent. Munroe canoes dawn-only. Vishu Apr 14. |
| May | 4.0/10 | Pre-monsoon plus arriving squalls. 28-34C, humidity 85 percent. Hotel rates at year-low. |
| June | 4.0/10 | SW monsoon. 25-30C, 600-700mm rain. Cruising in 6-8 hour deluges grim. |
| July | 2.0/10 | Peak monsoon. 25-29C, 700-800mm rain. SWTD cruise reduces. Munroe canoes closed. |
| August | 4.0/10 | Monsoon plus Onam. 25-29C, 500-600mm rain. Onam Aug 25 (verify 2026). Munroe canoes still closed. |
| Septemberviewing | 6.0/10 | Monsoon retreat. 25-30C, 350-400mm rain. SWTD cruise rebuilding. Munroe canoes reopen Oct 1. |
| October | 8.0/10 | Season opens. 24-30C, 200-250mm late-monsoon spillover. Munroe canoes reopen. |
| November | 10.0/10 | Peak builds. 23-30C, rainfall under 50mm. Ashtamudi at year-best. Hotel rates 20 percent below Dec. |
| December | 10.0/10 | Peak season. 22-30C, dry. Christmas-NYE rates 1.8-2.2x. SWTD cruise daily. |
Nearby in Kerala scoring high in September
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