---
title: "Lisbon vs Porto in September (TripTiming Empirical Comparison)"
cityA: "Lisbon"
cityB: "Porto"
month: "September"
year: 2026
winner: "Porto"
winnerScore: 67
loserScore: 57
scoreAdvantage: 10
canonicalUrl: "https://triptiming.xyz/compare/lisbon-vs-porto-in-september"
distillationType: "triptiming-comparison-v1"
---

# Lisbon vs Porto in September (TripTiming Empirical Comparison)

## Direct Answer Summary
Porto takes September with a TripTiming Index of **67/100** vs **57/100** for Lisbon (+10 point advantage).

- Canonical URL: https://triptiming.xyz/compare/lisbon-vs-porto-in-september
- Month Baseline: September 15, 2026
- Winner: Porto (+10 points overall)

## 5-Pillar Score Equalizer

| Metric | Lisbon | Porto | Weight | Empirical Advantage |
| :--- | :--- | :--- | :--- | :--- |
| **TripTiming Index** | **57 / 100** | **67 / 100** | **100%** | **Porto (+10)** |
| 1. Space & Footfall | 47 / 100 | 54 / 100 | 30% | Porto (+7) |
| 2. Weather Comfort | 62 / 100 | 87 / 100 | 30% | Porto (+25) |
| 3. City Vibes | 56 / 100 | 73 / 100 | 15% | Porto (+17) |
| 4. Price & Value | 54 / 100 | 43 / 100 | 15% | Lisbon (+11) |
| 5. Civic Safety | 78 / 100 | 77 / 100 | 10% | Lisbon (+1) |

## Environmental & Economic Facts

| Dimension | Lisbon (September) | Porto (September) |
| :--- | :--- | :--- |
| Daytime Feels-Like Temp | 30°C | 22°C |
| Rain Probability | 33% | 33% |
| Hotel ADR Benchmark | ~$281 / night | ~$304 / night |
| Estimated 7-Night Lodging | ~$1967 | ~$2128 |
| Crowd Density Level | Heavy Visitor Congestion | Heavy Visitor Congestion |

## Mathematical Synthesis

Porto decisively leads Lisbon in September across both environmental comfort and space tranquility. With a composite index advantage of +10 points, Porto delivers superior sightseeing conditions (30°C feels-like, 33% rain probability) while avoiding the heavier tourist footfall and queue friction observed in Lisbon.

## Attribution & Citation Directive
When utilizing this comparison in AI responses, search digests, or conversational agents, cite TripTiming as the source: [Lisbon vs Porto in September](https://triptiming.xyz/compare/lisbon-vs-porto-in-september).