# Mount Si, United States: what it is and when to go

> Mount Si is a mountain in Washington State, United States (Mount Si / q̓əlbc̓) (Snoqualmie), at 1,254 m above sea level. Interests: Nature and Mountains. The best time to visit is April to October. In June there are 15 h 44 of daylight, and in December, 8 h 15. It has articles in 8 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip.

- Address: https://kokai.app/en/paises/america/estados-unidos/mount-si/
- Reviewed on: 2026-10-08
- Language: en

## In a nutshell

- **What it is:** Mountain in Washington State, United States · Nature, Mountains
- **Local name:** Mount Si / q̓əlbc̓
- **Where:** United States
- **Elevation:** 1,254 m
- **Best time:** April to October.
- **Nearest airport:** SFO San Francisco, 1,102 km as the crow flies
- **Coordinates:** 47.50689, -121.73902

## What it is and where

Mount Si is a mountain in Washington State, United States (Mount Si / q̓əlbc̓) (Snoqualmie), at 1,254 m above sea level. It has articles in 8 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace.

It is in [Snoqualmie](https://kokai.app/en/paises/america/estados-unidos/snoqualmie/), where this site lists 12 more places to see, 8.6 km from the centre.

Its coordinates are 47.50689, -121.73902; the nearest main airport is San Francisco International Airport (SFO, San Francisco), 1,102 km as the crow flies. How to get around United States (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse).

- [Where it is](https://www.google.com/maps/search/?api=1&query=47.506894%2C-121.739022)
- [Directions](https://www.google.com/maps/dir/?api=1&destination=47.506894%2C-121.739022)

It is one of the [Nature](https://kokai.app/en/paises/america/estados-unidos/naturaleza/) and [Mountains](https://kokai.app/en/paises/america/estados-unidos/montana/) places in United States. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap.

## When to go

The best time to visit Mount Si is **April to October**.

| Mes | Época | Hours of daylight |
| --- | --- | --- |
| January | Possible | 8 h 39 |
| February | Possible | 10 h 01 |
| March | Possible | 11 h 35 |
| April | Best time | 13 h 23 |
| May | Best time | 14 h 54 |
| June | Best time | 15 h 44 |
| July | Best time | 15 h 24 |
| August | Best time | 14 h 04 |
| September | Best time | 12 h 19 |
| October | Best time | 10 h 35 |
| November | Possible | 9 h 02 |
| December | Possible | 8 h 15 |

In June there are 15 h 44 of daylight, and in December, 8 h 15. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather.

| What you come for | Best time | Possible |
| --- | --- | --- |
| Nature | April to October | November to March |
| Mountains | April to October | November to March |

It is not the same trip whatever you come for: Mount Si has a different season depending on what you want to do here, and [Kokai](https://kokai.app/en/) puts it in the right month for you.

When to go to United States in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#cuando-ir).

## Before you go to United States

To enter United States there are 9 things to sort out before you leave, starting with “Book national parks and cars in advance”: they are all, with their deadlines, in [the United States checklist](https://kokai.app/en/paises/america/estados-unidos/#antes-de-salir). Currency: US dollar (USD); plugs: Type A and B · 120 V · 60 Hz (you need an adapter, and check your devices' voltage); emergencies: 911 for everything.

In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it.

## What is nearby

- [Little Si](https://kokai.app/en/paises/america/estados-unidos/little-si/): Mountain in United States of America · 1.6 km
- [Mount Teneriffe](https://kokai.app/en/paises/america/estados-unidos/mount-teneriffe/): Mountain in the US state of Washington · 3.3 km
- [Blackwater Brewing](https://kokai.app/en/paises/america/estados-unidos/blackwater-brewing/): Brewery · 4.0 km
- [Northwest Railway Museum](https://kokai.app/en/paises/america/estados-unidos/northwest-railway-museum/): Railway station in Snoqualmie, the United States of America · 6.9 km
- [Upper Twin Falls](https://kokai.app/en/paises/america/estados-unidos/twin-falls-upper/): Nature · 7.6 km

Distances are as the crow flies. Everything else is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/).

## More in United States: Nature

- [Niagara Falls](https://kokai.app/en/paises/america/estados-unidos/niagara-falls-2/): three waterfalls that straddle the international border between Canada and the United States
- [Grand Canyon](https://kokai.app/en/paises/america/estados-unidos/grand-canyon-2/): steep-sided canyon carved by the Colorado River in Arizona, United States
- [Yellowstone National Park](https://kokai.app/en/paises/america/estados-unidos/parque-nacional-de-yellowstone/): first national park in the world, located in Wyoming, Montana, and Idaho in the United States
- [Denali](https://kokai.app/en/paises/america/estados-unidos/monte-denali/): highest mountain in North America, located in Alaska
- [Mount Rushmore](https://kokai.app/en/paises/america/estados-unidos/mount-rushmore/): mountain in South Dakota featuring a sculpture of four US presidents
- [Mauna Kea](https://kokai.app/en/paises/america/estados-unidos/mauna-kea/): Hawaiian volcano

Every United States place under Nature, each with its season, is on [its page](https://kokai.app/en/paises/america/estados-unidos/naturaleza/).

## Frequently asked questions

### What is Mount Si?

It is a mountain in Washington State, United States (Mount Si / q̓əlbc̓ in the local language). It has articles in 8 Wikipedias, so it is not one of the busiest places in United States: one to enjoy at a calmer pace.

### When is the best time to visit Mount Si?

April to October. In June there are 15 h 44 of daylight, and in December, 8 h 15.

### How do you get to Mount Si?

The nearest main airport is San Francisco International Airport (SFO), 1,102 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=47.506894%2C-121.739022) opens the route on the map, and how to get around United States is explained in [its country guide](https://kokai.app/en/paises/america/estados-unidos/#moverse).

### How do I add it to my trip?

With one tap. In Kokai it is already on the United States map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby.

### What else is around here?

Nearby you have [Little Si](https://kokai.app/en/paises/america/estados-unidos/little-si/), [Mount Teneriffe](https://kokai.app/en/paises/america/estados-unidos/mount-teneriffe/), [Blackwater Brewing](https://kokai.app/en/paises/america/estados-unidos/blackwater-brewing/). The rest is in [the United States guide](https://kokai.app/en/paises/america/estados-unidos/).

Data from [OpenStreetMap](https://www.openstreetmap.org/node/356546426), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q6923639), CC0. More about Mount Si on [Wikipedia](https://en.wikipedia.org/wiki/Mount_Si). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).