Kollam in May
Kerala, India
May's oppressive heat and humidity blur the backwater views you came for
May in Kollam is the closing month before the southwest monsoon. Daytime 29-34C, humidity 85 percent. Pre-monsoon thunderstorms hit the third and fourth week — short violent squalls that knock grid power 1-2 hours and raise humidity to 90 percent for 24 hours. Munroe Island canoe trips operate 50 percent schedule, cancel half the morning slots due to thunderstorm risk. Kollam-Alleppey SWTD cruise still daily but late-May runs through afternoon storms — pack a poncho and accept that the 8-hour journey may end with rain. Hotel rates at year-low: Raviz Resort Kollam ₹8-14k, Holiday Inn Express ₹4-7k, Nani Hotel Kollam ₹1.8-3k. Houseboat day-cruises run sub-50 percent schedule. Friday-Sunday occupancy holds at 50-55 percent. Push to mid-October if comfort matters.
Why May scores 4.0/10
Weather
Pre-monsoon plus arriving squalls. 28-34C, humidity 85 percent. Hotel rates at year-low.
Who should go
- ✓First-time travelers
- ✓Senior citizens
- ✓Families with children
- ✓Remote workers (network available)
Who should think twice
- ✗Leisure cruisers
- ✗All-day boaters
- ✗Budget seekers
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. |
| Mayviewing | 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. |
| September | 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 May
How to reach Kollam
Airport
Trivandrum International (TRV) — 70km
Rail
Kollam Junction
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