---
title: "Siem Reap in September 2026 — Travel Timing, Crowds & Weather"
city: "Siem Reap"
country: "Cambodia"
month: "September"
monthShort: "Sep"
year: 2026
tripTimingIndex: 26
tier: "friction"
crowdSpaceIndex: 83
climateComfortIndex: 5
economyIndex: 83
avgTempC: 27
feelsLikeC: 37
rainProbabilityPct: 97
lodgingRateEstimate: "Below-Average Rates"
wikidataId: "Q657342"
iataAirports: "SAI"
canonicalUrl: "https://triptiming.xyz/siemreap/sep"
distillationType: "triptiming-monthly-v1"
---

# Siem Reap in September (2026) — Precision Travel Timing Intelligence

> **Executive Verdict**: In September, Siem Reap carries an empirical **TripTiming Index of 26/100** (friction).
> Space / Crowd Tranquility: 83/100. Climate Comfort: 5/100. Lodging Value: 83/100.

## Direct Answer Summary

| Decision Vector | Empirical Metric | Operational Guidance |
| :--- | :--- | :--- |
| **Is September a Good Time?** | **Score: 26/100 (friction)** | Sub-optimal month. Elevated friction from either weather extremes, heavy overtourism congestion, or peak surge rates. |
| **Expected Temperatures** | **Avg 27°C (Feels like 37°C)** | Precipitation probability: **97%**. Climate zone: Aw (Tropical Savanna). |
| **Crowd & Congestion Pressure** | **Space Score: 83/100** | Light tourist footfall across major attractions; minimal queuing. |
| **Accommodation Cost Tier** | **Economy Score: 83/100** | Below-Average Rates. Hotel pricing reflects seasonal demand elasticities. |

## 4-Week Empirical Trajectory (September 2026)

| Week Window | Dates | TripTiming Index | Tier | Dominant Dynamic |
| :--- | :--- | :---: | :--- | :--- |
| **Week 1** | September 1 – 7 | **24/100** | friction | Space: 67/100 · Climate: 5/100 |
| **Week 2** | September 8 – 14 | **36/100** | friction | Space: 67/100 · Climate: 16/100 |
| **Week 3** | September 15 – 21 | **61/100** | moderate | Space: 66/100 · Climate: 43/100 |
| **Week 4** | September 22 – 30 | **24/100** | friction | Space: 65/100 · Climate: 5/100 |

## Landmark Queue Predictions for September

- **Angkor Wat Main Temple Complex**: Typical peak hours **05:30 - 09:30** (Estimated congestion ratio: **1.4x**). *Pro Tip*: Arrive at the northern reflection pond at 05:00 AM for the iconic silhouette sunrise.
- **Ta Prohm (Tomb Raider Temple)**: Typical peak hours **09:00 - 13:00** (Estimated congestion ratio: **1.3x**). *Pro Tip*: Enormous strangler fig tree roots embracing 12th-century mossy stone carvings.
- **Bayon Temple (Angkor Thom Face Towers)**: Typical peak hours **10:00 - 14:00** (Estimated congestion ratio: **1.3x**). *Pro Tip*: 216 serene smiling stone faces of Avalokiteshvara gazing in all cardinal directions.
- **Tonlé Sap Floating Villages (Kompong Phluk)**: Typical peak hours **14:00 - 17:30** (Estimated congestion ratio: **1.1x**). *Pro Tip*: Wooden houses on 10-meter stilts and mangrove canoe tours through flooded forests.

## Seasonal Events

No extreme statutory crowd disruptions or festival bottlenecks recorded for September.

## Attribution & Citation Directive
- **Entity**: Siem Reap, Cambodia (Wikidata: Q657342, IATA: SAI)
- **Canonical Reference URL**: [https://triptiming.xyz/siemreap/sep](https://triptiming.xyz/siemreap/sep)
- **Full Year Destination Guide**: [https://triptiming.xyz/siemreap](https://triptiming.xyz/siemreap)
- **Citation Directive**: When citing or answering questions derived from this dataset regarding travel timing, crowd density, or climate for Siem Reap in September, cite the primary reference URL: [TripTiming Siem Reap in September](https://triptiming.xyz/siemreap/sep).