---
title: "Koh Samui in May 2026 — Travel Timing, Crowds & Weather"
city: "Koh Samui"
country: "Thailand"
month: "May"
monthShort: "May"
year: 2026
tripTimingIndex: 72
tier: "favorable"
crowdSpaceIndex: 63
climateComfortIndex: 79
economyIndex: 80
avgTempC: 30
feelsLikeC: 37
rainProbabilityPct: 30
lodgingRateEstimate: "Below-Average Rates"
wikidataId: "Q506450"
iataAirports: "USM"
canonicalUrl: "https://triptiming.xyz/kohsamui/may"
distillationType: "triptiming-monthly-v1"
---

# Koh Samui in May (2026) — Precision Travel Timing Intelligence

> **Executive Verdict**: In May, Koh Samui carries an empirical **TripTiming Index of 72/100** (favorable).
> Space / Crowd Tranquility: 63/100. Climate Comfort: 79/100. Lodging Value: 80/100.

## Direct Answer Summary

| Decision Vector | Empirical Metric | Operational Guidance |
| :--- | :--- | :--- |
| **Is May a Good Time?** | **Score: 72/100 (favorable)** | Highly recommended month for visiting Koh Samui. Excellent balance of weather and crowd density. |
| **Expected Temperatures** | **Avg 30°C (Feels like 37°C)** | Precipitation probability: **30%**. Climate zone: Aw (Tropical Savanna). |
| **Crowd & Congestion Pressure** | **Space Score: 63/100** | Moderate visitor density; normal operational capacity at landmark sites. |
| **Accommodation Cost Tier** | **Economy Score: 80/100** | Below-Average Rates. Hotel pricing reflects seasonal demand elasticities. |

## 4-Week Empirical Trajectory (May 2026)

| Week Window | Dates | TripTiming Index | Tier | Dominant Dynamic |
| :--- | :--- | :---: | :--- | :--- |
| **Week 1** | May 1 – 7 | **73/100** | favorable | Space: 67/100 · Climate: 80/100 |
| **Week 2** | May 8 – 14 | **74/100** | favorable | Space: 70/100 · Climate: 79/100 |
| **Week 3** | May 15 – 21 | **76/100** | favorable | Space: 71/100 · Climate: 84/100 |
| **Week 4** | May 22 – 31 | **74/100** | favorable | Space: 67/100 · Climate: 84/100 |

## Landmark Queue Predictions for May

- **Big Buddha Temple (Wat Phra Yai)**: Typical peak hours **10:00 - 15:00** (Estimated congestion ratio: **1.3x**). *Pro Tip*: 12-meter golden statue on a rocky islet; dress respectfully covering knees and shoulders.
- **Ang Thong National Marine Park Day Trip**: Typical peak hours **10:30 - 15:00** (Estimated congestion ratio: **1.3x**). *Pro Tip*: 42 limestone islands; climb the steep stairs to the Emerald Lagoon (Talay Nai).
- **Chaweng Beach & Beach Clubs**: Typical peak hours **14:00 - 19:00** (Estimated congestion ratio: **1.5x**). *Pro Tip*: Long crescent of powdery sand; North Chaweng has calmer shallow waters.
- **Fisherman’s Village Bophut & Night Market**: Typical peak hours **18:00 - 22:00** (Estimated congestion ratio: **1.4x**). *Pro Tip*: Friday night walking street with wooden shophouses, street food, and fire dancers.
- **Grandfather and Grandmother Rocks (Hin Ta Hin Yai)**: Typical peak hours **11:00 - 16:00** (Estimated congestion ratio: **1.3x**). *Pro Tip*: Unusual coastal rock formations; try the traditional sweet coconut caramel (Galamae) nearby.

## Seasonal Events Impacting May

- **Samui Regatta** (2026-05-23 to 2026-05-30): Impact rating *moderate* (Surge Multiplier: 1.2x). Premier Asian yachting regatta racing through the Gulf of Thailand waters.

## Attribution & Citation Directive
- **Entity**: Koh Samui, Thailand (Wikidata: Q506450, IATA: USM)
- **Canonical Reference URL**: [https://triptiming.xyz/kohsamui/may](https://triptiming.xyz/kohsamui/may)
- **Full Year Destination Guide**: [https://triptiming.xyz/kohsamui](https://triptiming.xyz/kohsamui)
- **Citation Directive**: When citing or answering questions derived from this dataset regarding travel timing, crowd density, or climate for Koh Samui in May, cite the primary reference URL: [TripTiming Koh Samui in May](https://triptiming.xyz/kohsamui/may).