# Japan Weather Forecast API (JMA) (`kittenish_brill/jp-weather-forecast`) Actor

Live Japan weather forecasts from JMA by area code: weather, wind, waves, precipitation probability, and temperatures.

- **URL**: https://apify.com/kittenish\_brill/jp-weather-forecast.md
- **Developed by:** [libra t](https://apify.com/kittenish_brill) (community)
- **Categories:** News, Travel
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-usage

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Japan Weather Forecast API (JMA)

Live Japan weather forecasts from the official Japan Meteorological Agency public API.

Use this Actor to turn JMA forecast area codes into clean dataset rows with forecast time, area name, weather text, weather code, wind, wave height, probability of precipitation, and min/max temperatures.

### Why use it

- Official JMA forecast data in structured JSON rows.
- Works well for AI agents, dashboards, travel tools, logistics workflows, and local apps.
- Covers Japanese forecast areas by JMA area code.
- No browser scraping or proxy required.

### Common use cases

- Daily weather automation for Japan locations.
- Travel, hotel, event, and logistics planning workflows.
- Weather widgets and internal dashboards.
- AI agents that need current Japanese weather data.

### Input

| Field | Type | Description |
|---|---|---|
| `areaCode` | string | JMA forecast area code. Tokyo: `130000`, Osaka: `270000`, Sapporo/Hokkaido: `016000`. |
| `limitDays` | integer | Maximum forecast time periods per area. Default `3`, max `7`. |

```json
{ "areaCode": "130000", "limitDays": 3 }
```

### Output

One dataset row per forecast area and forecast time:

| Field | Meaning |
|---|---|
| `area_code` | Requested JMA forecast area code |
| `detail_area_code` | JMA sub-area code |
| `area_name` | Forecast sub-area name |
| `forecast_time` | Forecast time |
| `weather` / `weather_code` | Forecast text and JMA weather code |
| `wind` / `wave` | Wind and wave forecast text |
| `probability_of_precipitation` | Precipitation probability when available |
| `temp_min_c` / `temp_max_c` | Minimum and maximum temperature in Celsius when available |
| `publishing_office` | JMA publishing office |
| `report_datetime` | JMA report timestamp |

### Source

Data source: Japan Meteorological Agency public forecast API. This Actor is not affiliated with or endorsed by JMA.

Keywords: Japan weather API, JMA weather, 気象庁 天気予報, Japanese forecast API, Tokyo weather, Osaka weather, Japan travel weather, weather automation.

# Actor input Schema

## `areaCode` (type: `string`):

JMA forecast area code. Tokyo is 130000, Osaka is 270000, Hokkaido/Sapporo is 016000.

## `limitDays` (type: `integer`):

Maximum number of forecast time periods per area.

## Actor input object example

```json
{
  "areaCode": "130000",
  "limitDays": 3
}
```

# Actor output Schema

## `forecasts` (type: `string`):

Japan weather forecasts from the official JMA API

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "areaCode": "130000"
};

// Run the Actor and wait for it to finish
const run = await client.actor("kittenish_brill/jp-weather-forecast").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "areaCode": "130000" }

# Run the Actor and wait for it to finish
run = client.actor("kittenish_brill/jp-weather-forecast").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "areaCode": "130000"
}' |
apify call kittenish_brill/jp-weather-forecast --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,kittenish_brill/jp-weather-forecast"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/5LQmZIkHX8d1Ga8lT/builds/4ZZie6EvaaLyOcOk2/openapi.json