Here are a few options for a WordPress post tag description for the tag “天氣” (Tiānqì – Weather) in Traditional Chinese, catering to different needs:

**Option 1: Concise and Direct (Best for Simple Usage):**

> 包含有關天氣的資訊，例如天氣預報，氣溫，天氣狀況等等。
> (Contains information about the weather, such as weather forecasts, temperatures, and weather conditions, etc.)

**Option 2: More Detailed (Good for Explaining Scope):**

> 關於天氣的所有內容都可以在這裡找到。這包括每日天氣預報、不同地區的天氣概況、季節變化、氣候變化，以及與天氣相關的新聞和資訊。
> (Everything about the weather can be found here. This includes daily weather forecasts, weather overviews of different regions, seasonal changes, climate change, and news and information related to the weather.)

**Option 3: Emphasis on Relevance (Good for Audience Engagement):**

> 想知道今天的天氣如何？想了解未來幾天的天氣狀況？在這裡您可以找到最新的天氣資訊，幫助您計畫日常活動，並隨時掌握天氣的變化。
> (Want to know what the weather is like today? Want to know the weather conditions for the next few days? Here you can find the latest weather information to help you plan your daily activities and stay informed about weather changes.)

**Option 4: Focusing on Cultural Significance (If it’s related to a site with cultural content):**

> 探索天氣在文化中的重要性。從古老的中國氣象學、農耕曆法，到對天氣的文學、藝術和生活的影響。
> (Explore the importance of weather in culture. From ancient Chinese meteorology and agricultural calendars to the impact of weather on literature, art, and life.)

**Key takeaways and how to choose:**

* **Conciseness:** Aim for a description that is easy to understand and immediately clear.
* **Relevance:** Ensure the description accurately reflects the content tagged with “天氣”.
* **Audience:** Consider who your audience is and what information they’ll find most useful.
* **SEO:** While tag descriptions have less direct SEO impact than the title, adding keywords like “天氣預報” (weather forecast), “氣溫” (temperature), etc., can be helpful if you’re using the tag to organize relevant content.
* **Platform Specifics:** WordPress allows for different lengths. All the above are in a generally reasonable length.

**How to use in WordPress:**

1. Go to your WordPress admin panel.
2. Navigate to “Posts” (or “Categories” if this is a category description, the same principles would apply).
3. Click “Tags.”
4. Find your “天氣” tag.
5. Click “Edit.”
6. In the “Description” field, paste your chosen description.
7. Click “Update.”

I recommend starting with **Option 1 or 3** for most basic uses. Adapt it to your specific content as needed. Good luck!