Today will be a scorcher in Perth, before the sun produces warm beautiful weather across the Christmas break. A hot airmass is being dragged south along WA's west coast today by a low pressure trough just off the coast. Today is set to reach a top in the high 30's, likely making it the hottest day since last summer. The final day of the working week will be a struggle for those doing labour out in the blazing sun. This weekend the trough will have moved inland of Perth drawing the heat further east and then north. Sunny skies will prevail across western WA with only inland areas a chance to see temperatures exceed 35 degrees. As Christmas approaches, each day will be slightly warmer than the day before it, supported by the every present sunshine. On Christmas Day, the west will again be sunny, except for the chance of an afternoon shower or storm over inland parts of the Gascoyne. Temperatures are likely to reach the mid 30's about most coastal areas from Carnarvon to Perth, possibly reaching the high 30's north of Geraldton, where seabreezes could be delayed until the early afternoon by the hot southeasterlies. Further south, seabreezes will be stronger and the airmass will be cooler, leading to a very pleasant Christmas Day south from Perth. After Christmas the warm-to-hot and mostly sunny weather should continue in the west for a couple more days and could even last until the end of the year. For those searching endless sunshine this Christmas period, the west is the best.