All about WLK Files

The WLK file type is primarily associated with WeatherLink.

WLK	File extension: WLK
	File type:	data file

What is a WLK file?

WLK files mostly belong to WeatherLink. WLK files are specialized log files used by dedicated software to record and store sensor data.
Main functions:

Weather Data: They primarily capture readings from weather instruments, including temperature, humidity, and wind speed.

Location Logging: Some versions also record GPS coordinates, making them useful as location data logs.

Data Preservation: The information is stored in a structured, often proprietary, format that requires specific software to interpret.

Opening a WLK file:
FilExt.com tip: If you have a WLK file, use the proper application (typically WeatherLink) rather than a simple text editor, as the file contains binary or structured data not meant for manual editing.

How to open a WLK file

You need a suitable software like WeatherLink to open a WLK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your WLK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a WLK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online WLK Text Viewer

Choose your .wlk file to analyze

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Programs that open and convert WLK files:

WeatherLink
See the previous paragraphs to learn more about the main application. WLK files are often referred to as WeatherLink data files because this type of file is primarily created or used by this software.
Virtus Walkthrough Graphics
WeatherLink (ver 5.2 Binary Weather Data) by Davis
The .WLK file contains binary weather data downloaded from a Davis Instruments weather station. This format is used in version 5.2 and later. Files begin with the text "WDAT5.0". Data files from earlier version of the program do not have a fixed file extension, but begin with the text "WDAT1.0". These files can be converted to .WLK files by the WeatherLink 5.2 program. The identifying characters used for this association are - Hex: 57 44 41 54, ASCII: WDAT.

WLK format details:

The file format determines how the data is stored in the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Below is our analysis of the WLK files:

The WLK file type is primarily used by a single program. But the following two file formats are common:

85% of all WLK files are WeatherLink Binary Weather data files. These files contain neither text nor words, but only data. WLK files are between 13 KB and 420 KB in size. The file type is relatively new. Certain words are almost always found in the files, such as WDAT5.3. Some examples of file names are 2020-01.wlk.
3% of all WLK files start with the bytes aisleaisleaisleaisleaisleaisleaisleaisleaisleaisleais, which are crucial for this file format. If you open these files in a text editor, you can view and read the content yourself. The files are 3.6 KB to 3.6 KB in size, with a median of 3 KB. The following keywords are characteristic: aisleai ais isle lea isle and aisleai/ isle/ lea/ ais/ isleaisle/ /eaisleaisleaisle. The file name Aisle.wlk is typical for these files.

The remaining 12% of all WLK files are different files with different signatures. Sometimes used for puyo. If you want to find out what your WLK file contains, drag and drop it onto this page.

Technical Data for WLK File Extension

File classification:

Data

Identifier:

Hex: 57 44 41 54, ASCII: WDAT (provided by TrID database)

Related files:

gpx, kml, mlk, wdat, dat, exe, aab, et1, wea, csv, xml, txt, log

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: 3DHA3.Walk, FileType: Recorded Walkthrough

a wlk data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with WLK files

Associate the WLK file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest WLK file format. Search, therefore, e.g. on the manufacturer website after an available WeatherLink update.
To make sure that your WLK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .WLK file online - secure, fast, and no downloads needed.