esphome-docs/components/sun.rst

Sun
===

.. seo::
    :description: Instructions for setting up tracking the sun position in ESPHome.
    :image: weather-sunny.svg

The ``sun`` component allows you to track the sun's position in the sky. Calculations are done every 60 seconds.

.. code-block:: yaml

    # Example configuration entry
    sun:
      latitude: 48.8584°
      longitude: 2.2945°

    # At least one time source is required
    time:
      - platform: homeassistant

Configuration variables:
------------------------

- **latitude** (**Required**, float): The latitude for performing the calculation.
- **longitude** (**Required**, float): The longitude for performing the calculation.

- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.

Automation:

.. code-block:: yaml

    # Example configuration entry
    sun:
      latitude: 48.8584°
      longitude: 2.2945°

      on_sunrise:
        - then:
            - logger.log: Good morning!
        # Custom elevation, will be called shortly after the trigger above.
        - elevation: 5°
          then:
            - logger.log: Good morning 2!

      on_sunset:
        - then:
            - logger.log: Good evening!

- **on_sunrise** (*Optional*, :ref:`Automation <automation>`): An automation to perform at sunrise
  when the sun crosses a specified angle.

  - **elevation** (*Optional*, float): The elevation to cross. Defaults to -0.833° (the horizon, slightly less than 0° to compensate for atmospheric refraction).

- **on_sunset** (*Optional*, :ref:`Automation <automation>`): An automation to perform at sunset
  when the sun crosses a specified angle.

  - **elevation** (*Optional*, float): The elevation to cross. Defaults to -0.833° (the horizon, slightly less than 0° to compensate for atmospheric refraction).

``sun`` Sensor
--------------

Additionally, the sun component exposes its values over a sensor platform.

.. code-block:: yaml

    # Example configuration entry
    sensor:
      - platform: sun
        name: Sun Elevation
        type: elevation
      - platform: sun
        name: Sun Azimuth
        type: azimuth

.. figure:: images/sun-sensor-ui.png
    :align: center
    :width: 80.0%

Configuration variables:

- **type** (**Required**, string): The type of value to track. One of ``elevation`` and
  ``azimuth``.
- All other options from :ref:`Sensor <config-sensor>`.

``sun`` Text Sensor
-------------------

Other properties like the next sunset time can be read out with the sun text_sensor platform.

.. code-block:: yaml

    # Example configuration entry
    text_sensor:
      - platform: sun
        name: Sun Next Sunrise
        type: sunrise
      - platform: sun
        name: Sun Next Sunset
        type: sunset

.. figure:: images/sun-text_sensor-ui.png
    :align: center
    :width: 80.0%

Configuration variables:

- **type** (**Required**, string): The type of value to track. One of ``sunrise`` and
  ``sunset``.
- **elevation** (*Optional*, float): The elevation to calculate the next sunrise/sunset event
  for. Defaults to -0.833° (the horizon, slightly less than 0° to compensate for atmospheric refraction).
- **format** (*Optional*, string): The format to format the time value with, see :ref:`strftime`
  for more information. Defaults to ``%X``.
- All other options from :ref:`Text Sensor <config-text_sensor>`.

.. _sun-is_above_below_horizon-condition:

``sun.is_above_horizon`` / ``sun.is_below_horizon`` Conditions
--------------------------------------------------------------

The ``sun.is_above_horizon`` and ``sun.is_below_horizon`` :ref:`conditions <config-condition>`
allow you to check if the sun is currently above or below the horizon.

.. code-block:: yaml

    on_...:
      - if:
          condition:
            - sun.is_above_horizon:
          then:
            - logger.log: Sun is above horizon!

See Also
--------

- :apiref:`sun/sun.h`
- :ghedit:`Edit`