Hong Kong 9-Day Weather Forecast: Daily Temperature, Humidity, Wind, Rain Chance (Hong Kong Observatory)

hko/nine-day-forecast

The Hong Kong Observatory's 9-day weather forecast: the general situation text, then for each of the next nine days the wind, weather, minimum and maximum temperature in degrees Celsius, minimum and maximum relative humidity, weather icon code and the probability of significant rain (PSR, a word such as Low or High), plus the latest sea temperature at North Point and soil temperatures at the Observatory. lang is en, tc (Traditional Chinese) or sc (Simplified Chinese) and sets the language of the text; times are Hong Kong time, UTC+8. Hong Kong Observatory data, passed through unmodified and served by Eden Engine; not an official Hong Kong Observatory product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

Hong Kong Observatory

Source: Hong Kong Observatory, The Government of the Hong Kong Special Administrative Region, via DATA.GOV.HK. The Government and the Hong Kong Observatory own the intellectual property rights in the data. Served by Eden Engine; not an official Hong Kong Observatory product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "hko/nine-day-forecast" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "hko/nine-day-forecast" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "hko/nine-day-forecast", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "hko/nine-day-forecast", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 20, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "lang"
  ],
  "properties": {
    "lang": {
      "enum": [
        "en",
        "tc",
        "sc"
      ],
      "type": "string",
      "description": "Language of the text: en (English), tc (Traditional Chinese) or sc (Simplified Chinese)."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "generalSituation",
    "weatherForecast",
    "updateTime"
  ],
  "properties": {
    "seaTemp": {
      "type": "object",
      "description": "Latest sea temperature: place, value, unit and recordTime.",
      "additionalProperties": true
    },
    "soilTemp": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true
      },
      "description": "Latest soil temperatures: place, value, unit, recordTime and depth."
    },
    "updateTime": {
      "type": "string",
      "description": "When the forecast was issued, ISO 8601 with a +08:00 offset."
    },
    "weatherForecast": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "PSR": {
            "type": "string",
            "description": "Probability of significant rain, a word such as Low."
          },
          "week": {
            "type": "string",
            "description": "Day of the week."
          },
          "ForecastIcon": {
            "type": "integer",
            "description": "Weather icon code."
          },
          "forecastDate": {
            "type": "string",
            "description": "Day as YYYYMMDD."
          },
          "forecastWind": {
            "type": "string"
          },
          "forecastMaxrh": {
            "type": "object",
            "properties": {
              "unit": {
                "type": "string"
              },
              "value": {
                "type": "number"
              }
            },
            "additionalProperties": true
          },
          "forecastMinrh": {
            "type": "object",
            "properties": {
              "unit": {
                "type": "string"
              },
              "value": {
                "type": "number"
              }
            },
            "additionalProperties": true
          },
          "forecastMaxtemp": {
            "type": "object",
            "properties": {
              "unit": {
                "type": "string"
              },
              "value": {
                "type": "number"
              }
            },
            "additionalProperties": true
          },
          "forecastMintemp": {
            "type": "object",
            "properties": {
              "unit": {
                "type": "string"
              },
              "value": {
                "type": "number"
              }
            },
            "additionalProperties": true
          },
          "forecastWeather": {
            "type": "string"
          }
        },
        "additionalProperties": true
      },
      "description": "One entry per day, nine in all, soonest first."
    },
    "generalSituation": {
      "type": "string",
      "description": "The Observatory's general weather situation text."
    }
  },
  "description": "The Hong Kong Observatory 9-day forecast.",
  "additionalProperties": true
}