Summer goes out on a high! Britain will be hotter than MONACO tomorrow as temperatures soar to 73F before Autumn washes in

  • Promises of 'Indian Summer' saw optimistic Britons flock to seaside in the South East and embrace the rays
  • Temperatures are expected to reach highs of 73F (23C) London putting the capital ahead of Monaco 71F (22C)
  • Northern Scotland, central and western England also benefitted from the the bright sunshine today
  • Rain will reach Northern Ireland tomorrow evening, which will later move to western Scotland, north west England, west Wales and south west England

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Britain is set to be hotter than Monaco tomorrow as temperatures soar to 73F before the Autumnal weather washes in. 

London is expected to reach highs of 73F (23C) on Sunday, meaning that it is set to be warmer than Monaco, which will see highs of 71F (22C).

Today, optimistic Britons flocked to the seaside in the South East to embrace the weather after forecasters predicted an 'Indian Summer' earlier this week.  

Last days of summer: People enjoyed the afternoon sun today, jumping from the pier  at Hot Walls in Old Portsmouth

Last days of summer: People enjoyed the afternoon sun today, jumping from the pier at Hot Walls in Old Portsmouth

Britons were spotted sunning themselves in Portsmouth today as a late Indian Summer hit the UK today. Yesterday was the first official day of Autumn, known as the Autumn Equinox

Britons were spotted sunning themselves in Portsmouth today as a late Indian Summer hit the UK today. Yesterday was the first official day of Autumn, known as the Autumn Equinox

Soaking up the rays: People enjoyed the hot weather at Hot Walls beach in Old Portsmouth, Hampshire this weekend 

Soaking up the rays: People enjoyed the hot weather at Hot Walls beach in Old Portsmouth, Hampshire this weekend 

Weymouth visitors enjoyed the warm day today despite a few clouds appearing in the sky. Several people decided to go paddling and swimming in the sea while others walked along the beach

Weymouth visitors enjoyed the warm day today despite a few clouds appearing in the sky. Several people decided to go paddling and swimming in the sea while others walked along the beach

Two friends decided to lounge in some stripey deck chairs and natter as the sun shone down on a stoney beach in Brighton earlier this afternoon

Two friends decided to lounge in some stripey deck chairs and natter as the sun shone down on a stoney beach in Brighton earlier this afternoon

People made the most of the warm weather in Old Portsmouth, Hampshire this weekend, sunbathing at Hot Walls beach

People made the most of the warm weather in Old Portsmouth, Hampshire this weekend, sunbathing at Hot Walls beach

One man was spotted building sandcastles on his own while donning some sun glasses, a stripey shirt and some cargo shorts 

One man was spotted building sandcastles on his own while donning some sun glasses, a stripey shirt and some cargo shorts 

A group of children decided to ride some donkeys in a beach in Weymouth. Two adults were spotted leading them along the sandy route

A group of children decided to ride some donkeys in a beach in Weymouth. Two adults were spotted leading them along the sandy route

Met Office forecaster Mark Wilson said: 'On Saturday afternoon the best of the sunshine is across southern parts of the country, particularly south western parts and also the far north of Scotland.

'Central and eastern parts will be dry and fairly bright and we could see highs of 73F (23C) in London. 

'In between in that central slice there will be a fair amount of cloud around and the odd bit of rain. Most places will be quite dry but will turn quite windy in the west.' 

But despite the warm weather for the southern parts of the UK, wet weather is predicted to hit the western regions of the UK tomorrow evening.

'A band of rain is set to reach Northern Ireland by the evening, which will continue to track its way eastwards through the night so by dawn tomorrow it will be pretty wet across western parts of Scotland, north-west England, West Wales and South West England,' he added.

A baby, his relative and a young girl chased the waves during their weekend in Dorset while a man was seen snapping photographs in Weymouth

A baby, his relative and a young girl chased the waves during their weekend in Dorset while a man was seen snapping photographs in Weymouth

Enjoying the rays: The weather was so warm in Old Portsmouth, Hampshire this weekend that people sunbathed in bikinis on the beach at Hot Walls

Enjoying the rays: The weather was so warm in Old Portsmouth, Hampshire this weekend that people sunbathed in bikinis on the beach at Hot Walls

A group of people gathered and observe the waves in Portsmouth while several others sat on the pebbles and embraced the rays

A group of people gathered and observe the waves in Portsmouth while several others sat on the pebbles and embraced the rays

Another family was spotted building sandcastles as people walked across the beach in Weymouth. Some sun-lovers sat on deckchairs near the beach

Another family was spotted building sandcastles as people walked across the beach in Weymouth. Some sun-lovers sat on deckchairs near the beach

Three lifeguards in Weymouth were larking around on the beach in between keeping watch of swimmers in the sea

Three lifeguards in Weymouth were larking around on the beach in between keeping watch of swimmers in the sea

Things will start to cool down on Monday and Tuesday with highs of 70F (21C) and lows of 45F (7C).

Mr Wilson said: 'It's very tricky to say at this time of year as we can still get some fairly warm spells as we are this weekend.

'Obviously, the later in the season you go the less likely that will happen. But it's not completely out of the question.' 

The Autumnal Equinox on Thursday officially marked the end of summer in the Northern Hemisphere. Over the coming months, the amount of daylight becomes shorter than hours of darkness.

The warmest temperature of the month so far was 74.8F (23.8C), recorded at Wellesbourne, Warwickshire, on September 4.

Last year, 34.3C (93.9F) was recorded at Gravesend, Kent, on September 13.